answer: #Person1# wants to have a lower price for exercise books. #Person2# refuses at first but agrees after #Person1# promises to order a large amount about 300 dozens.
documents: #Person1#: Excuse me, I want to know what's your price per dozen for exercise books?
  #Person2#: 15 dollars per dozen
  #Person1#: Oh, it's rather too high. We have another offer for a similar one at a much lower price.
  #Person2#: However, the quality of our exercise books is better than others. I can assure you that our price is the most favorable. A trial will convince you of my words.
  #Person1#: If you can go a little lower, I'd be able to give you an order on the spot.
  #Person2#: This price of yours is out of the question. You must know that the cost of production has risen a great deal in recent years.
  #Person1#: I hope you'll give a second thought to it.
  #Person2#: We'll have to discuss the problem later.
  #Person1#: What about if we order a large amount of exercise books?
  #Person2#: Could you give me an idea of how larger an amount you want?
  #Person1#: About 300 dozens.
  #Person2#: Then, let me check. For the large quantity you ask, considering the cost of raw materials, I think 13 dollar is our bottom line. And I can assure you this is the lowest price in the market in nowadays.
  #Person1#: OK. That's a deal.