answer: #Person2# shows #Person1# some pearls of different qualities. #Person1# buys the $280 one rather than the $350 one.
documents: #Person1#: I'm looking for a string of pearls for my wife.
  #Person2#: Yes, sir. What price range do you have in mind?
  #Person1#: I'm not sure. I don't know very much about the price of pearls.
  #Person2#: I see. Let me show you some samples of various qualities. This one is very nice. It's three hundred and fifty dollars.
  #Person1#: Is there a price reduction?
  #Person2#: We are having a sale now. The price has already gone down.
  #Person1#: How much is that one?
  #Person2#: It's two hundred and eighty dollars.
  #Person1#: OK. I'll take it. Thank you.