answer: #Person2# buys some drawing tools and asks for an invoice with #Person1#'s assistance.
documents: #Person1#: Ten sheets of rice paper, 25 brushes, two boxes of oil color and two boxes of water color. All these come up to $ 35. 50, sir.
  #Person2#: Ok, here is $ 50. Oh, can you make out an invoice for me?
  #Person1#: Sure, just a minute. Are you an artist, sir?
  #Person2#: No, I am a teacher. I teach art.
  #Person1#: That must be a very interesting job.
  #Person2#: It is. You must be new here. I do my shopping here regularly, once a week.
  #Person1#: Do you? Nice to meet you! And here is the invoice and your change.
  #Person2#: Thank you. Nice to meet you, too.