How to book appointments by phone with AI, without double booking

One call, start to finish

Say you run a two-chair barbershop in Hamilton. It's Thursday afternoon, you've got clippers in one hand, and the phone goes.

The AI answers and says it's an AI. The caller wants a cut and a beard trim on Saturday morning. The AI knows that's your cut and beard service, and that it takes forty-five minutes. It checks Saturday. Your 9 am and 9.30 am are taken, so it offers 10.15 or 11. The caller takes 10.15. The AI asks for a name, uses the number they're calling from so you've got a working contact, books it, and says the day and time back to them: Saturday the eighth, quarter past ten. Then it says goodbye.

You finish the fade you're doing. The booking is already in your calendar.

That's the whole thing. If the caller had asked for Sunday and you don't work Sundays, it would have said so and offered the nearest days you do. If nothing that week suited, it could have put them on a waitlist for the next opening.

What you need to book appointments by phone with AI

Three things, and the AI won't take bookings without them.

Your services and how long each one takes. Keep the list to what people actually book by phone. A barber might have a cut, a beard trim, and a cut and beard. A physio might have an initial assessment and a follow-up. The length matters, because it's how a ninety-minute job doesn't get squeezed into a thirty-minute gap.

Your working hours, including the days you don't work.

Your Google Calendar, connected. This is what lets the AI see the rest of your life. The integrations page shows how it connects.

If you haven't set up services or hours, the AI doesn't offer bookings at all. It takes a message instead. A caller is never offered a diary that doesn't exist.

Why does it only offer times it has checked?

Because the worst thing a booking system can do is promise a time that isn't free. Left to its own devices, a language model will happily offer one, and it'll sound completely sure of itself. So the AI is told to check availability first and to offer only the times that check returned. Never one of its own.

The check looks at four things:

• your working hours, so nothing is booked outside them;
• the length of the service, so the gap really fits;
• bookings already taken, by phone or any other way;
• busy time in your connected Google Calendar.

That last one is the one people forget. Your own dentist appointment, the school pickup on Wednesdays, Saturday morning at the kids' cricket: if it's in your calendar as busy, the AI won't book over it.

Times are read out the way a person says them. Tuesday at half past two, not a string of numbers.

Two callers, one slot

Two people ring at the same moment and both ask for Tuesday at ten. Only one of them gets it. The booking is checked again at the instant it's written, and the second caller is offered other times instead of being booked on top of the first. Same if a booking somehow gets requested twice. You end up with one appointment, not two.

Keep the calendar honest

Here's the part that's on you. The AI can only be as accurate as your calendar. Free in the calendar has to mean free.

So block your holidays. Block the training day, the trip to the supplier, the long lunch on Fridays. If a staff member is away, take their time out. Ten minutes doing this saves an awkward phone call later.

Then test it. Talk to your AI in the browser and ask for a time you know is free, then one you know is taken, then a service you don't offer. Each answer should make sense. If one doesn't, fix the setting before a real customer finds it.

The full setup, from pasting in your website to picking a number, is in how to set up an AI phone.

What it doesn't do

Worth being straight about the limits.

• Confirmation is spoken, on the call. The AI reads back the day and time before it hangs up, and it won't promise the caller a message on their phone.
• Changes and cancellations become messages. If someone wants to move or cancel, the AI takes the details and you update the diary.
• Google Calendar is the one calendar it connects to.
• No payments. It doesn't take deposits or card details over the phone.

Who gets the most out of it

Anyone whose phone is mostly bookings. Salons, barbers, physios, clinics, personal trainers, dog groomers, tradies booking quote visits. If most of your calls end with a time in the diary, this is the part that pays for itself. The salon page shows how a salon sets up its services and hours.

What the rest of a call sounds like, from the AI disclosure at the start to the goodbye, is in what callers hear on an AI phone.

Each prepaid plan runs 30 days with a local number, the AI answering and minutes included. Lite is US$29 with 100 minutes, and the pricing page has every plan. You can try it free for 7 days with no card, booking into your own calendar from the browser before a single customer rings.

FAQ