Free templates to copy
Appointment rescheduling message: templates to copy
Quick answer
A good rescheduling message says which appointment changed, gives the reason in a few words when it's the clinic that has to change, and already offers two new times for the patient to choose with a short reply. Below are 8 templates: four for when the clinic reschedules and four for when the patient asks.
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Rescheduling is where a clinic loses the most patients. Someone who receives “we need to reschedule, which day works?” has to stop, open the calendar and think. Many put it off and never come back. Two ready-made times solve that.
Replace what is in brackets with your clinic's details. For messages from before the appointment, see day-before reminder and the message templates for clinics.
Summary in 7 facts
- A good rescheduling message says which appointment changed, gives the reason in a few words when it's the clinic that has to change, and already offers two new times for the patient to choose with a short reply.
- Rescheduling is where a clinic loses the most patients.
- Someone who receives "we need to reschedule, which day works?" has to stop, open the calendar and think.
- Professional emergency The professional won't be able to see patients on the scheduled day.
- "Which day works better for you?" with no time offered.
- The open question hands the work back to the patient.
- There are, when the clinic starts the conversation.
By the numbers
| Number | What it means |
|---|---|
| 8 templates | Below are 8 templates: four for when the clinic reschedules and four for when the patient asks. |
| 24 hours | On the official Meta connection, a business can only send free text up to 24 hours after the patient's last message. |
| 28,2% | CertuAI measured when patients write on WhatsApp at 17 clinics and practices that answer with CertuAI's AI: 28.2% of messages arrived outside Monday to Friday, 8am to 6pm, almost 3 in… |
| 19,259 messages | Source: CertuAI service database, 17 clinics and practices, 19,259 patient messages on WhatsApp from Jul 30 to Sep 30, 2026, measured Oct 1, 2026. |
Appointment rescheduling message when the clinic has to reschedule
1. Professional emergency
The professional won't be able to see patients on the scheduled day.
Hi, [name]. This is [clinic name]. [Professional] had an emergency and won't be seeing patients on [day of the week], [date], at [time].
We apologize for the change. I have [day] at [time] or [day] at [time]. Reply 1 or 2 with whichever works better.
2. Entire day's schedule canceled
To send to each patient of the day, one by one, when the clinic closes or the professional is out.
Hi, [name]. We need to cancel the appointments on [day of the week], [date], at [clinic name].
Your [time] appointment can move to [day] at [time] or [day] at [time]. Which do you prefer? If neither works, tell me the best time of day and I'll look for another.
3. Same-day time change
The day stays, only the time changes.
Hi, [name]. Your [day of the week] appointment with [professional] still stands, but we need to change the time: from [old time] to [new time].
Does that time work for you? If not, reply here and I'll offer another.
4. Test with preparation rescheduled
The patient needs to know the preparation moves to the new date too.
Hi, [name]. Your [test] has moved to [day of the week], [date], at [time].
Note: the preparation now applies to the new date. [The preparation exactly as the professional defined it].
If you have any questions about the preparation, reply here and the team will explain.
See the 172 message templates for clinics, by situation
Free for your clinic
Your clinic can have a free booking page. You choose the link name and get an address like certu.com.br/agendar/clinica-sorriso. The patient opens it, sees the free times and books on their own, without logging in to anything. No booking limit and no commission. See how to create yours.
Rescheduling message when the patient asks to reschedule
5. Reply to a rescheduling request
The patient writes that they can't come.
No problem, [name]. I have [day] at [time] or [day] at [time] with [professional]. Which works better?
6. Last-minute rescheduling
The request arrives a few hours before, and the clinic has a rule for that.
Thanks for letting me know, [name]. I'll free up today's slot.
[If the clinic has a notice rule: As a reminder, we ask for [X] hours' notice.] For next time, I have [day] at [time] or [day] at [time].
7. New date confirmed
After the patient chooses the new time.
Done, [name]! Your appointment has moved to [day of the week], [date], at [time], with [professional].
The old slot has been freed. The address stays the same: [address].
8. Patient who didn't reply to the rescheduling
One day after offering the times, with no reply.
Hi, [name]. I'm still holding [day] at [time] for you until [cutoff time today]. After that I'll offer it to whoever is waiting.
Do you want that time? Or would you rather I look for another?
If you are the one writing, as the patient, and the idea is to cancel without rescheduling right now, the ready-made texts are in how to cancel an appointment politely.
What not to write in a rescheduling message?
- “Which day works better for you?” with no time offered. The open question hands the work back to the patient.
- The reason for the visit or the name of the test, when the message may show on the phone screen.
- Too much detail about the professional's emergency. “There was an emergency” is enough.
- Scolding for rescheduling. Someone who gives notice is doing what the clinic asked, and scolding teaches people to skip without notice.
Are there any rules for rescheduling on the official WhatsApp?
There are, when the clinic is the one who starts the conversation. On the official Meta connection, a business can only send free text up to 24 hours after the patient's last message. A rescheduling that the clinic announces days later, like templates 1 to 4, has to be a message template approved by Meta.
When the patient is the one who writes asking to reschedule, templates 5 to 7 go in the same conversation, within the 24 hours, without approval.
How does CertuAI's AI reschedule on its own?
On the CertuAI calendar, when the patient asks to change the time, the AI offers free times, reschedules and frees the old slot. When the patient cancels, it immediately offers a new time, so the slot doesn't turn into a no-show.
At a clinic connected to Feegow, the AI doesn't touch Feegow to reschedule: it alerts the team, which adjusts the calendar and replies to the patient in the same conversation.
For the full plan against no-shows, with the cost of the loss, see how to reduce patient no-shows.
What CertuAI measured on clinic and practice WhatsApp
CertuAI measured when patients write on WhatsApp at 17 clinics and practices that answer with CertuAI's AI: 28.2% of messages arrived outside Monday to Friday, 8 a.m. to 6 p.m., almost 3 in 10. If the front desk works those hours, that's the part that waits until someone comes back.
| What was measured | Result |
|---|---|
| Patient messages that arrived outside Monday to Friday, 8am to 6pm | 28,2% |
| Messages that arrived on the weekend | 11,2% |
| Messages that arrived at night on a weekday, 6pm to midnight | 11,7% |
| Conversations that started outside Monday to Friday, 8am to 6pm | 29,9% |
On a phone, drag the table sideways.
Source: CertuAI service base, 17 clinics and practices, 19,259 patient messages on WhatsApp from Jul 30 to Sep 30, 2026, measured on Oct 1, 2026. Business hours are Monday to Friday, 8 a.m. to 6 p.m., in each clinic's time zone. Test accounts, test contacts and imported history are excluded.
Frequently asked questions
How do you apologize when rescheduling a patient's appointment?
In one sentence, without over-explaining: "We apologize for the change." Right after, offer two times. The apology weighs less than speed in offering the solution.
How many times should you offer when rescheduling?
Two. One feels like an imposition, and three or more make the person overthink. If none works, ask for the best time of day and offer two more.
Can I charge a fee to someone who reschedules at the last minute?
That's the clinic's decision. If you charge, the rule needs to be written in the confirmation, on the day the patient books, and not show up for the first time at the moment of rescheduling.
Does CertuAI's AI reschedule in Feegow?
Not on its own. At a clinic connected to Feegow, the AI alerts the team, which reschedules in Feegow. On the CertuAI calendar, the AI reschedules and frees the old slot.
Want the AI to do this on your WhatsApp?
CertuAI is AI automation software for small and medium-sized Brazilian businesses. The AI answers on the clinic's WhatsApp, books on the calendar and records each conversation. The Start plan costs US$ 75 per month, no lock-in contract.
Set up my clinic's AIYou connect the number the clinic already uses.
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Other clinic questions CertuAI has answered
In short
A good rescheduling message says which appointment changed, gives the reason in a few words when it's the clinic that has to change, and already offers two new times for the patient to choose with a short reply. Below are 8 templates: four for when the clinic reschedules and four for when the patient asks.
About CertuAI: CertuAI is the AI that answers a small business's WhatsApp, Instagram and Messenger 24/7, with a built-in CRM, and is a Tech Provider on Meta's WhatsApp Business Platform. Paid plans start at US$ 75 a month, with no lock-in. Create my agent