Hey there.  I'm very interested in your car. 
Hello. Yes, it's still available. 
Excellent.  I love Mustangs.  Why are you getting rid of it?
I have a new one and have not had a chance to take this one out in a while. It's just sitting in the garage. 
How long has it been sitting in a garage?
Just for a month or so. It's been maintained and started regularly. It's very clean and runs great. 
That sounds great.  It looks like it's in great shape.  What kind of mileage does it have on it?
Only 15,000 miles. 
Wow, that's incredible.  Would you take $20000 for it, and I can pay in cash today? 
I was looking to stay close to $28,500. The car is pretty much new. Has very low mileage. it's well maintained. 
I really want this car, but that's a little too rich for my blood.  How about 23000, because blue is my favorite color. 
The lowest I can go is $26,000
How about $25,500, and I'll name it after you?
I can do $25,900. No lower than that.