Hi there, is this car in good running shape? Are you the only owner? Does it have any major repair history?
Hi, Yes, I am the only owner and it is in excellent running condition. There has never been any major repairs, only general necessary maintenance. 
Excellent. It is quite a nice vehicle, however since I have never seen it or driven it I'll have to hope you can negotiate the price some. I'm only able to afford a certain amount, however I can pay you fully in cash.
Well, it is in like new condition and has very low miles but I can negotiate some on the price. I would take 20500 for it.
Hm, just a touch higher than I was hoping for. Is there anyway you would be able to take 19,600?
Let's meet in the middle at 20000 even.
19,900 in cash is the best I can come up with.
Okay, well I can do that. Deal!