Are you interested in my phone case?
Yes would you be willing to lower the price to $10?
I cannot go that low.  Could you do $15?
I have cash in hand and I can pick it up today. The highest I can go is $12.
Sorry I cannot go any lower than $15.
Can you meet me half way so I don't have to drive so far? I can do $15 then.
Where are you located?
I'm in Downtown
Awesome.  I have somewhere to be in that area later today so we can meet up.
Ok great. Let's meet at 4PM. $15 thanks my man