answer: Diane comes to Jack's office to negotiate over the air-conditioners' price. Jack thinks $611 is reasonable for good quality, but Diane mentions the market price is lower. Considering the large quantity of Diane's order, Jack agrees to reduce the price. They agree $600 as a final price.
documents: #Person1#: How do you do? Nice to meet you, Diane.
  #Person2#: How do you do, Jack. Nice to meet you.
  #Person1#: Well, I think you ' Ve reconsidered our proposal, Diane.
  #Person2#: Yes, you are right. After all, the quality of your air conditioners is good. The only problem is price.
  #Person1#: I should not be surprised, many customers have the same opinion. Do you have any suggestion in mind? Our salesman told your secretary that the price could be negotiable.
  #Person2#: That's why I came to your office today. We think for your model WE - 506 $ 590 would be reasonable, because air conditioners of the same kind sold by other companies are usually about 579-649.
  #Person1#: That's true. But if you understand that quality is the most important aspect of a product, you'll agree that 679 is not high, especially when we allow you a 10 % discount.
  #Person2#: I see your point. That's to say s 611 each set. Still it's much higher than the market price. Could you see your way to reduce the price, Jack?
  #Person1#: Well, considering the quantity of your order we could further reduce the price to 600. That's the best we can do. What do you think of that?
  #Person2#: All right. We accept it. So $ 600 for each set.
  #Person1#: Very well. Thank you.