Hello
Hi!
This car looks great. Is it in good condition?
Yes. It runs great.
Can I come take a look at it today?
Sure. But I have another offer. Are you really interested in buying?
Yes I am. 
Ok. I'm looking for $4000. How much are you offering?
I would like you to come down to 3000?
Hmm... I could go down to $3600. I just put new tires on it.