When a Traveller is interested in your listing and decides to send a booking request, you'll be informed by email. You can also check the information about your bookings under "Bookings" in the Host Area. From there, you'll have the option to accept or decline the booking request, and you'll have 24 hours to respond once the request is received.
If you or the Traveller have any questions, you can chat directly through the messaging feature located under "Booking Details."