Calendar Scheduling
A voice AI agent that books and reschedules appointments by phone straight in your calendar, and confirms them by SMS. In production at Dalia and Bonnie&Car.
How does AI appointment scheduling by phone work?
A voice AI agent answers the call, checks your live availability, offers slots and books the appointment straight into your calendar. A caller can also reschedule an appointment they already have.
It talks in the language of the caller and says dates the way people say them, in the right time zone.
- 100%of inbound calls handled without a human at Dalia, with bookings written straight to the calendar
- 5languages, with dates and times spoken naturally in each
- 10 minbefore the appointment, the reminder SMS
Updated 30 September 2026
From the call to the calendar.
- Reads your live availability in Google Calendar; Outlook is supported for availability and booking.
- Books the slot, and reschedules an existing appointment found by the caller's phone number (Google Calendar).
- Confirms by SMS at booking and sends a reminder 10 minutes before, from your Twilio account.
- Says dates and times naturally in French, English, Spanish, Dutch and Portuguese.
You set the rules of the diary.
| Setting | What you control |
|---|---|
| Availability | Named schedules with a time zone, and overrides per event type |
| Minimum notice | How soon a slot can be booked (30 minutes by default) |
| Horizon | How far ahead callers can book, from 1 to 45 days |
| Calendars | One or several, checked together |
And the calls that keep appointments.
A confirm-appointments template calls people ahead of their appointment, reads it from the calendar and lets them confirm or reschedule.
You launch it as a campaign on the appointments you want to confirm, and people who call back reach the same agent.
Where it runs.
At Dalia, a dental care company rolling out to 100 dentists, all inbound calls are handled without a human and bookings are written straight to the calendar.
At Bonnie&Car, the agent books meetings in Google Calendar and confirms them to the caller and to the agent.
Appointment scheduling by phone, answered.
Can an AI voice agent book appointments in my calendar?
Yes. It checks your live availability, offers slots to the caller and writes the booking in your calendar while the call is going on.
Which calendars does it work with?
Google Calendar, and Microsoft Outlook for availability and booking.
Can the caller reschedule?
Yes. The agent finds the caller's existing appointment from their phone number and moves it to a new slot (Google Calendar).
Does the caller get a confirmation?
An SMS at booking and a reminder 10 minutes before, sent from your Twilio account. You can add an email through a tool of the flow.
Can it call people to confirm their appointments?
Yes. Launch a campaign on the appointments to confirm: the agent reads each one from the calendar. See outbound campaigns.
Still have questions?
Contact us
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