answer: #Person1# asks Miss Liu to copy a report for him.
documents: #Person1#: Miss Liu, please come in.
  #Person2#: What can I do for you, sir?
  #Person1#: Copy this report for me.
  #Person2#: OK. But which size should I use?
  #Person1#: You should use the A4 paper is all right.
  #Person2#: I see. Should I have it bound?
  #Person1#: It is unnecessary.
  #Person2#: That is all right.