Hi! Are you interested in my bike?
Yes. Can you tell me a little more about it?
Sure! It's a vintage 1971 Schwinn Continental and it's in great shape. It's a marine blue and it's ready to use. 
Awesome. If I pick it up today and pay in cash, would you take $40 for it?
That sounds like a pretty fair offer. What time can you come by?
Within the next two hours, if that is okay with you?
That will work out perfectly. You've got yourself a deal and a really cool bike!
Thanks