Hey, nice bike you have here
Thank you! Are you interested in buying the bike?
Can you tell me more about it? It'd be nice to ride down the boulevard during summer.
Yes, this bike is perfect for long bike rides. The seat is memory foam, so you won't have to worry about pain. The 7 speeds will allow you to customize your speed, whichever suits you the best. I just replaced the tires, so those are in great condition! And there is not a scratch in sight! 
I really like that, sounds like you keep it in tip-top shape. My budget is in the range of 50-60, does this sounds reasonable to you?
I will accept $60, because I feel like you will really enjoy this bike as much as I did.