answer: #Person2# is thinking about getting hair shampooed when #Person2#'s son is getting hair cut. #Person1# recommends a massage. #Person2# feels refreshed and buys the coupon.
documents: #Person1#: Would you please take a seat over there? There are some interesting magazines on the coffee-table.
  #Person2#: Thank you. How long it take to get my son's hair cut?
  #Person1#: It shouldn't be long. Thirty minutes, tops. Are you in a hurry?
  #Person2#: No. I'm thinking that maybe I can get my hair shampooed.
  #Person1#: Good idea. Do you want a wash or a massage? Massage is especially good when you are tired.
  #Person2#: How come?
  #Person1#: Because it helps you speed up your circulation.
  #Person2#: Then I won't say no to that.
  #Person1#: How do you like it?
  #Person2#: I feel totally refreshed.
  #Person1#: We have discount coupons. 100 Yuan for ten times. Would you like to have one?
  #Person2#: This time included?
  #Person1#: Of course.
  #Person2#: Then yes.