Hey I really want that bike but it seems a bit to pricy mind if we talk about it?
Sure, I will answer any questions you have.
Well I get you upgraded it and its a 2017 model but how used is it?
I only used it a few times. I really do not have time to ride it due to my job.
ok that's fine and how are the tires and current chain
Both are in excellent condition. Not a scratch on the bike. 
Ok well im working with a budget of 684. Now i should remind you this is still a used bike and even with your upgrades it wouldn't push it too 900 I could get a completely stock bike for 779
I am actually taking a loss asking the $900. I am willing to negotiate on the price, however, I cannot go that low.
Well yes selling this.  Bike without much use.  Is certainly a loss for you but i did my reasearch and your exact model and your upgrades have gone down in price when bought brand new now a brand new bike with those up grades would run me about 820 so that would certainly mean your bike value has significantly reduced. If 684 is too low I can do 699 and i will pick it up
This bike was only used three times and it has been parked in a garage. It is very clean with many upgraded parts. I could do $790 and I will deliver it to you.
How about 740 with meet me halfway delivery
I can do $750 with meeting halfway for delivery.
745. Sound good that's really the best I can do
Okay, you got yourself a deal.