Hey, are you interested in the bike I'm selling?
Yes, can you tell me anything else about it?
Unfortunately it is a bit on the older side and does need a little bit of work.  But considering the condition it's in, I still think it has the potential to be a great bike with a little work.  Hoping to get $250 for it.
I'd love to have it would you be willing to come down to $150 since it needs some work?
That's too low for me.  How about this, I throw in a new comfortable seat and scrape off the rust, and we go with 230?