Hi so I'm interested in the bike, is there anything wrong with it?
No, there's nothing wrong with it.
Ok, how long have you had it for, why are you selling it?
I've had it for about a 6 months and I'm getting a car, so I won't be needing it as much.
Cool, so I'm interested in it. I'd like to pay $150, is that doable? $350 sounds like the price of a new bike.
It may seem like alot, but it is a vintage bike and it was made in Italy.  How about we meet in the middle and I'll let you have the bike for 250.
I still can't do that, do you have any asscessories you can throw in?
I have a special tote bag that you can put it in after you fold it up.  Also, I can throw in a helmet.
Ok, so with that stuff, I can do $200, no more.
I can let you have it for $200, no less than that.