Wow, this looks like a great car!
It is a great car actually, and very well taken care of. This car is pristine. Are you interested?
I am very interested! How many miles are on it?
Only 15k miles on it, still basically new.
Not bad at all. That is close to new. Whats the price?
I'm asking 45000 for it. Same as the blue book value of it. 
Ww, thats steep! How about 38,000.
I've already gotten offered more than that, why should I take less? Can do better than my best offer of 41k?
40,500 works.
No it doesn't, I just said my best offer was 41k and you offer less? Can you do better than 41000 or not?
No, not unless you offer some incentive. Can I have a 500 dollar rebate? 
No there's no rebate I can offer you, why would I offer a rebate just to give the money back to you? You don't make any sense at all I'm afraid we can't reach a deal.