It replaces the detail and repeats the new one back. In this simulation the receptionist reads the name, number, address and time back before it books anything, so a wrong digit gets caught while the caller is still on the line, and the booking keeps only the corrected details. Chleb's own line confirms the time and the caller's email before it books. In the sample call below, a caller gives her number with two digits swapped and fixes it at the read back.
Before the receptionist books anything, it reads the details back in one sentence: name, callback number, service, address and time. The caller hears the number digit by digit, the way it was written down, which is when a swapped pair of digits becomes obvious.
In the sample call, the caller says 813 555 0194 when she meant 0149. The receptionist repeats the number right away and she does not notice. At the read back she does, says the number is wrong and gives the right one. The receptionist repeats the new number, she confirms, and only then is the estimate booked.
A caller does not have to wait for the read back. In the simulation, a line that starts the way people correct themselves, such as "wait", "sorry", "actually" or "no, the number is", replaces the detail it names, and the call carries on from where it was. The demo offers corrections to try at each step: a new number while the address is being asked for, a different house number at the read back, or a different day.
The simulated receptionist treats the two kinds of change differently. When the caller changes the time, it checks the new time against the calendar before accepting it and reads everything back again. When the caller changes the number or the address, it repeats the new detail and waits for a yes.
Only the corrected details reach the booking. In the records beside the demo, the contact shows the new number with a corrected label, and the call carries a tag saying the caller corrected the phone number.
With a live Chleb setup, every call is logged with a transcript and recording, according to Chleb's FAQ, so anyone can check what the caller said first and what they changed it to. The same FAQ says that if the receptionist mishandles a call, you flag it and that exact scenario gets fixed.
It shows how a correction changes the call: the new detail replaces the old one, it is confirmed back to the caller, and the booking uses it. Ravelstone Lawn & Palm and the caller are fictional.
It does not show speech recognition at work. In the demo you type or tap exact words, and in the video the caller's lines are text-to-speech, so nothing is misheard. On a real phone line, a noisy connection or an unclear digit is where the read back matters most, and that is worth testing with the live receptionist at (813) 694-8671. The corrections the simulation understands follow fixed patterns; the production receptionist uses a language model and may handle phrasings this demo does not. The voices in the video come from Kokoro text-to-speech.
Simulated call, voiced by text-to-speech. The live receptionist is at (813) 694-8671.
Narrator: Simulated call, voiced by text-to-speech. The live receptionist is at (813) 694-8671.
Receptionist: Thanks for calling Ravelstone Lawn & Palm, this is the virtual receptionist. How can I help you today?
Caller: Hi, this is Karen Walsh, at 813 555 0194. I need a lawn quote.
Receptionist: I can help with lawn service estimate. What's the address for the visit?
Caller: 9 Elm Rd.
Receptionist: The earliest I can offer is tomorrow at 9 AM or tomorrow at 9:30 AM. Which works better?
Caller: The first one.
Receptionist: Let me read that back: Karen Walsh, at 8 1 3, 5 5 5, 0 1 9 4, for lawn service estimate, at 9 Elm Rd, tomorrow at 9 AM. Is that all correct?
Caller: No, the number is wrong. It's 813 555 0149.
Receptionist: Got it, I've changed the number to 8 1 3, 5 5 5, 0 1 4 9.
Receptionist: Let me read that back: Karen Walsh, at 8 1 3, 5 5 5, 0 1 4 9, for lawn service estimate, at 9 Elm Rd, tomorrow at 9 AM. Is that all correct?
Caller: Yes, that's right.
Receptionist: You're booked for tomorrow at 9 AM. The team will see it on their calendar right away. Is there anything else I can help with?
Caller: No, thanks.
Receptionist: Thanks for calling Ravelstone Lawn & Palm. Have a good day!
In the simulation, that is what the read back is for: the caller hears the number and can correct it before anything is booked. Every real call is also recorded and transcribed, according to Chleb's FAQ, so the original can be checked.
Yes. In the simulation, saying something like "actually, make it Wednesday at 10" at the read back checks that time, books it if it is open, and reads everything back again.
Not in the booking. The simulated contact record keeps only the new value and marks it as corrected, and the transcript shows both, so you can see what changed and when.