After the bookig request the customer can receive different type of emails:
Pending: when the booking is pending.
Confirmed: the booking has been confirmed.
Denied: the booking has not been accepted.
Cancelled: the user cancelled the booking.
No show: the customer didn't go to the restaurant.
Finished: the manager has changed the booking as finished and the customer will receive a message asking for a review.
Admin pending: the administrator can receive a message every time the booking is pending
Admin confirmed: when the booking changes to confirmed
Admin cancelled: and when changes to cancelled
Access these notifications from Settings -> Notifications -> Templates