answer: #Person1# gives #Person2# the registration card and tells the room number. Room 8715 is on the 7th floor because 8 is a lucky number in China.
documents: #Person1#: Good afternoon. Can I help you, sir?
  #Person2#: I made a reservation last week by the name of Benjamin. We've just arrived.
  #Person1#: A minute, please. Benjamin... Oh, yes, here it is. One double room for a whole week. Here is the registration card. Would you please fill this form out, sir?
  #Person2#: Love to! (A few minutes later) Done! Here you are.
  #Person1#: Thank you. Now everything is in order. Your room number is 8715.
  #Person2#: Is it on the 87th floor?
  #Person1#: No, sir. In China, eight is a lucky number. It's actually on the 7th floor.
  #Person2#: Thank you. By the way, is there a dressing table in the room?
  #Person1#: Yes. A traditional wooden one.