answer: #Person1# tells #Person2# they need to buy Lisa a gift and #Person2# recommends some brands. Then #Person1# suddenly remembers #Person1# hasn't called Helen who is with #Person1#'s phone and asks #Person2# #Person1#'s telephone number.
documents: #Person1#: Darling, I'm going to stop by Bergner's first. It's got some quality stuff. Who knows, some of their dresses might be on sale.
  #Person2#: Bergner's?
  #Person1#: It's a fairly well known store like Penny's. I need to get something for Lisa's birthday. She's into name brands. Any suggestions?
  #Person2#: A Gucci handbag or Calvin Klein T-shirt might be nice. Oh, I have a 15% discount card for Penny's. Let's go ahead and use it. Here it is.
  #Person1#: It's wonderful. We can save some money for our home. Oh no, I was supposed to give Helen a call in hour ago. It's already 4:45. I left my phone with her. She must be still waiting for my call.
  #Person2#: Use my phone, darling.
  #Person1#: OK. Is my telephone number 61199621?
  #Person2#: Oh my God! You still don't remember it. It's 61299621. Only the last number is different from mine. Mine is 2.
  #Person1#: Don't blame me. I have changed it for only 3 days.
  #Person2#: OK, you should write it down on your notebook.