answer: #Person2# helps #Person1# to buy some envelopes in large size, a large pad, and some glue.
documents: #Person1#: I want some envelopes please.
  #Person2#: Do you want the large size, or the small size?
  #Person1#: The large size please. Do Have you any writing-paper?
  #Person2#: Yes, we do. I don't have any small pads. I only have large ones. Do you want a pad?
  #Person1#: Yes, please. And I want some glue.
  #Person2#: A bottle of glue.
  #Person1#: And I want a large box of chalk, too.
  #Person2#: I only have small boxes. Do you want one?
  #Person1#: No, thank you.
  #Person2#: Is that all?
  #Person1#: That's all, thank you.
  #Person2#: What else do you want?
  #Person1#: I want my change.