@Kouky1
I have a guideline that I follow that I don’t accept bookings if I have been unable to establish 2-way communication with the guest. I let 12-24 hours pass depending on the particular guest, and then I deny the booking with a note that the booking request expired because requested information was not provided (in this case it would be confirmation that 11:30 pm is ok), and invite them to resubmit with with the requested info. I try to make it clear that I am not really denying the request and would love to host them (if it’s true).
Most of the time, the guest really did want to book, but didn’t have notifications turned on and therefore wasn’t alerted to the communication attempt. At that point they usually resubmit their request with the info I asked for. I then advise them to turn notifications on, if they haven’t already.