We have created a new Input UI in the Builder Tool, which makes it really easy for you to book appointments with your users over the Bot conversation. It’s called the Calendar Time Input UI and here is how it looks like:
The user can select the Date fom the Calendar UI and then select the available preferred slot right after that, and then send it across in the chat. If they cannot find a preferred time slot for the selected date, they can go back and pick another date.
Here is how you the configuration for this new Input UI looks like in the Gambit Modal
Check this corresponding help doc for this Input UI: