answer: #Person2# wants to return a radio which doesn't work well.
documents: #Person1#: Hi, I'd like to return this radio.
  #Person2#: All right. Do you have the receipt?
  #Person1#: Here it is.
  #Person2#: May I ask why you're returning the radio?
  #Person1#: It does not work very well.
  #Person2#: Would you like to exchange it?
  #Person1#: No. I'd just like a refund.
  #Person2#: Certainly. This will take only a few seconds.