answer: #Person2# calls to exchange the sweater in the wrong size. #Person1# asks #Person2# to come down with the receipt and the sweater.
documents: #Person1#: Hello. Thank you for calling Spend Mart.
  #Person2#: Is this the Customer Service Desk?
  #Person1#: Yes. How can I help you?
  #Person2#: I bought a sweater from your store a week ago. It says size 12. But actually, it is a size 10. Can I exchange it?
  #Person1#: Do you have the receipt with you?
  #Person2#: Yes, I do.
  #Person1#: I like to apologize for the problem. Please come down with your receipt and sweater to exchange it for the size you want.
  #Person2#: Thank you very much.
  #Person1#: You're welcome.