Hi 
Hello!  Does this phone come with a case or screen protection?
No it doesn't but I would be happy to give you one. I can give you both for $280
Great...is the phone used?  How'sx the condition of the case?
Its used but it is as new and the condition of the case is brand new. The phone is silver color and has 32 gig memory. I used it for a few months and then wanted to get a new one, so selling this one. 
Is the Sprint contract in effect?  How long is left on it?
Yes its in effect and has about 2 years left
I like the phone but it is a bit above my budget.  How about $100 off and I'll pick it up with cash?
I can give it to you for $200 that's what I can do. 
How about splitting the difference and I'll bring you a coupon for Starbucks?  $196?
I can last do only $200 that's all I can offer.
Okay...I can do that!