Hi! I am willing to sell this bike at a great price are you interested?
Yes, I am very interested! It looks like a beautiful bike.
Ok cool! The bike has very low miles and has and upgraded WTB saddle! It also has carbon blade forks and 105 brakes. I am willing to sell for as low as $750.
$750 seems a little steep since the bike already has some miles on it. Would you accept $400? 
$595 is the lowest for a fact!
$595 is a little high for my budget. Are there any accessories you'd be willing to throw in--for instance, a basket, lights, and/or bike pump? That would make it a lot more appealing for me.
I will throw in my 700c wheelset, instead of the standard wheelset. How about that!
I am excited for the 700c wheelset, but it looks like that was already listed in the ad. Is there anything else you can include?
Nothing unfortunately. How about 550 and we can call it a night!
That sounds pretty reasonable. Before we make the final agreement, could you just let me know roughly how may miles are on the bike?
Well I bought the bike from someone else and have not used it. He did not specify on the miles but just said that it was very low!
Hmm--the ad says that you bought it new. Since you actually bought it (lightly) used from someone else, can we lower the price to $450?