answer: #Person1# wants to buy red roses for his wife. #Person2# serves #Person1# and tells #Person1# how to keep roses fresh for a longer time.
documents: #Person1#: I'd dike some red roses.
  #Person2#: Is it your wife's birthday?
  #Person1#: No, it's our wedding anniversary. She really likes roses. So I give her some every week. I just wish they would stay fresh longer than they do.
  #Person2#: If you put a little sugar in the water they will stay fresh for days.
  #Person1#: Really? I want to try to use white vinegar in the water and it helped a little.
  #Person2#: Sugar is even better.
  #Person1#: It is worth trying, I will tell my wife. How much do I owe you?
  #Person2#: Let's see. They are $ 10 a dozen. So that will be $ 5.00.
  #Person1#: OK. Here you are.
  #Person2#: Thank you. Here are the flowers.