answer: #Person1# asks #Person2# to find #Person1#'s suitcase. #Person2# asks #Person1# to tell more information but #Person2# still gives #Person1# the wrong suitcase.
documents: #Person1#: I left a suitcase on the train to London the other day.
  #Person2#: Can you describe it, sir?
  #Person1#: It's a small blue case and it's got a zip. There's a label on the handle with my name and address on it.
  #Person2#: Is this case yours?
  #Person1#: No, that's not mine.
  #Person2#: What about this one? This one's got a label.
  #Person1#: Let me see it.
  #Person2#: What's you name and address?
  #Person1#: David Hall, 83, Bridge Street.
  #Person2#: That's right. D. N. Hall. 83. Bridge Street. Three pound and fifty pence please.
  #Person1#: Here you are.
  #Person2#: Thank you.
  #Person1#: Hey!
  #Person2#: What's the matter?
  #Person1#: This case doesn't belong to me! You've given me the wrong case!