Good morning. I have a great deal on a 2007 Jeep Liberty. Tires good, AC good. Interested?
Yeah, what's the mileage on it?
Well, can't tell you the mileage as I don't know and I'm not the type who lies. Asking $4700. 
Have you had any maintenance problems? Does the oil get changed regularly?
No maintenance issues. Oil is changed every 3000-4000 miles. No tough or dirty driving. Only used on paved roads. It's still sharp looking (silver) with no body damage other than the usual paint chips on the front end (rocks from road, etc.).
How about $4400?
Hmmm, How about $4700 and I'll cover $300 of non-maintenance repairs for one year?
I can do $4,500.
Ok. I can live with $4500 for an "as is" sale.
Okay perfect.