Hello how are you?
good, how about you?
I am fine thanks.
are you interested in the case?
Yes is it brand new?
absolutely and still in the package
Are these good if you drop the phone?
yes 
Can you still fit it in your pocket with the case on?
yes
Is the price firm?
pretty much.  how much would you be willing to pay?
I would like to pay $22.
I'll accept 23.50
Ok I can do that.
we've got a deal!