answer: #Person2#'s looking for a cotton polo shirt and #Person1# offers recommendations.
documents: #Person1#: May I help you, sir? 
  #Person2#: Yes, please. I'm looking for a cotton polo shirt. 
  #Person1#: Any particular colour? 
  #Person2#: Not really. 
  #Person1#: How about this one? 
  #Person2#: I like the design, but don't particularly care for the colour. Do you have that in other colours, too? 
  #Person1#: Well, they come in white, pale yellow, aqua, red and green. Will a white one do? 
  #Person2#: Yes. I prefer white - and may I see a pale yellow one, too? 
  #Person1#: Why, of course. Let's see. . . White. . . Pale yellow. Here you are, sir.