answer: #Person2# purchases a suitable cap by check with #Person2#'s help.
documents: #Person1#: Can I help you, madam?
  #Person2#: Yes, I'm looking for a cap. Size 16.
  #Person1#: Would you like to try this one on?
  #Person2#: Yes. It's a bit tight. Have you got a bigger one?
  #Person1#: All right. How about this one?
  #Person2#: Yes, that's fine. I'll take it. Can I pay by check?
  #Person1#: Of course, madam.