Hi!
hi
Are you interested in buying my product
Yes. 
Perfect! I can give you an amazing deal on this bike! Do you have any questions?
It looks like it needs a new inner tube
Ok that can be done! How much are you willing to buy the bike for?
$55 dollars
That is extremely low. The bike is basically new and has a great finishe
It's a used bike that needs a new tube.  I can give you $60
Ok that sounds like a deal. One condition is that you must come and pick the bike up!
That sounds fair.