@Cathie1
Inquiries / request for information :
You are just obliged to answer within 24 hours to keep a high response rate.
Request for reservation :
if you are willing to accept them , you can pre approve their request within 24 hours .
They won't book anyway because it is not their dates.
In this case , their CB is debited and they will be obliged to cancel and pay airbnb fees (very efficient to learn the lesson).
Or you also can decline their request for reservation within 24 hours.