answer: #Person1# helps Wang Wei to settle his bill of $120 via Master Card.
documents: #Person1#: Good morning, can I help you?
  #Person2#: Yes, could I settle my bill, please?
  #Person1#: Yes. of course. May I have your name and your room number, please?
  #Person2#: Wang Wei, Room 1202.
  #Person1#: OK, Mr. Wang, here is your bill. The total amount is US $ 120.
  #Person2#: The figure seems right.
  #Person1#: How do you wish to settle your account, sir?
  #Person2#: By credit card, please. And what kind of credit cards do you honor?
  #Person1#: We accept Master Card, American Express and Visa.
  #Person2#: Then I'll put it on my Master Card. Here you are.
  #Person1#: Thank you. Would you sign here, please? Here's your receipt.