Hello there, you have an interest in my vehicle? 
I do. I feel like that price is a bit too high, though. I don't suppose you can come down? 
I'd be willing to go down a little, but the price listed is the blue book value. Do you have an offer?
Well, here's the thing....the warranty only runs until Aug 2017. That's not even a month of coverage. So, I think I'd be willing to offer 13800
Unfortunately that's much too low for a car that's worth 20, even with the expiring warranty. I could go down as far as 18500, but that's as far as I can go.
Well, it's worth 20 on the blue book. But at 53k miles, it's been driven about 13k miles a year. That's a bit high. I bet it's due for a fair amount of work so that warranty would be handy. I guess I could do 14500.
I can't do 14500. I guess I can do 18, but that's my final offer.
I'd be able to do something like that if you'd be willing to pay for a mechanic to inspect it