Hello
Hi there!
This looks like a good car. Is it in good condition?
Considering it being 13 years old, it is in great condition!  I have never had any issues with this car and have maintained it perfectly.
Are you willing to lower the price at all for me? I am on a bit of a budget.
I am in no rush to sell it and understand being on a tight budget, but am certainly open to reasonable offers. 
I would like to pay 4900 for it. Is that a good deal?
That is a bit low for what I will accept.  The lowest I will take is 6200.
That sounds good to me.
Okay, you've got a deal!