answer: #Person2# bargains for a hat, but #Person1# says the price is set.
documents: #Person1#: May I help you, sir?
  #Person2#: I need a hat. Would you show me some?
  #Person1#: Certainly, here you are.
  #Person2#: I like the black one. May I try it on?
  #Person1#: Of course. It fits you perfectly.
  #Person2#: Yes, I thinks so. How much is it?
  #Person1#: It's forty-five yuan.
  #Person2#: Can you make it much cheaper?
  #Person1#: Sorry, our prices are set.