@Robyn34
From one Robin to another Robyn......you can't until there is an accepted booking in place. Once the booking request has been accepted by you, you will receive a message confirmation, and at that point you will see the guests phone and email contact details to the left of the confirmation. You will aso be able to message your contact details through 'messages'!
But it is all very secretive until that booking has been confirmed.....ABB don't want to take the risk that the booking might slip behind their back! Good luck and good hosting Robyn...
Cheers.....Rob