answer: #Person2# helps #Person1# choose T-shirts and #Person1# buys three in different colors from #Person2#.
documents: #Person1#: Excuse me. 
  #Person2#: Hello sir, may I help you? 
  #Person1#: Yes. Can I see that T-shirt on the top shelf please? 
  #Person2#: Sure. Here it is. 
  #Person1#: How much does it cost? 
  #Person2#: 50 dollars. 
  #Person1#: 50 dollars. That's too much. 
  #Person2#: How about this one? It's on sale for only 35 dollars. 
  #Person1#: I don't like that one. 
  #Person2#: How about the one next to the black gloves? It's very similar to the one you like. 
  #Person1#: That's nice. How much is it? 
  #Person2#: 30 dollars. 
  #Person1#: That'll be fine. 
  #Person2#: Is this color OK, or would you like a different color? 
  #Person1#: That blue one's fine. 
  #Person2#: Do you need any more of these shirts? 
  #Person1#: Yes. 
  #Person2#: How many do you want? 
  #Person1#: I'll take two more, a red one and a white one.