Good morning , sir . Can I help you ?   I'm due to check out tomorrow , but I'd like to extend my stay by two days .   Could I have your name and room number ?   Tom Black in Room 207 .   Please wait a moment , Mr . Black . I'll have to check the reservation records ... I'm sorry , but we are expecting several tour groups to arrive today . They have booked all the rooms on the 10th floor . 