answer: #Person2# helps Mr. Gao reserve a table for dinner.
documents: #Person1#: I'd like to reserve a table for three at 6:30 this evening.
  #Person2#: Let me check. Hold on, please. . . Yes, that's fine. Smoking or nonsmoking area?
  #Person1#: Nonsmoking, please.
  #Person2#: All right. May I have your name?
  #Person1#: My surname is Gao.
  #Person2#: How do you spell it, sir?