answer: #Person2# buys a Chinese painting of cranes with pine trees with #Person1#'s assistance.
documents: #Person1#: Good morning, sir. Could I be of any service to you?
  #Person2#: Have you got any Chinese paintings?
  #Person1#: Yes, we have landscape paintings, figure paintings and flower-and-bird paintings.
  #Person2#: I'd like a flower-and-bird painting.
  #Person1#: Good. How about this picture of cranes with pine trees? It was painted by a famous Chinese painter in King Dynasty.
  #Person2#: Oh, they look just like live cranes. I like this picture very much. How much is it?
  #Person1#: One thousand dollars.
  #Person2#: It's a lot of money. But the picture is excellent, I'll take it.