answer: #Person2# pays his bill in cash with #Person1#'s assistance.
documents: #Person1#: Good morning, sir. May I help you?
  #Person2#: Good morning. I'd like to pay my bill.
  #Person1#: OK. In cash or by credit?
  #Person2#: In cash. How much is the total charge?
  #Person1#: Five hundred and thirty yuan altogether including charges for service.
  #Person2#: Here you are. Thanks for your wonderful service.
  #Person1#: Not at all. Welcome again.