Hello!  Looks like you're in the market for a terrific phone deal today!
Hello I would like to activate my ATT phone today but I can only afford to pay $35. Would you be willing to work with me?
Oooo.  Can't go that low to be fair to my other customers.  I'd be willing to activate your phone for $45.
I am really under some financial hardship and I really need my phone. I am a college student from out of state and I can barely make rent for this month. Can I get it for $40 that is all I can afford to pay. When I leave here I will not have a penny extra to my name.