Task: Dialogue State Tracking
Input (English): Buyer: Hello, I was interested in your DJI Phantom, Is this still available?
Seller: It sure is!  It's a great unit.  Easy to fly and many of the parts are still in the original box!
Buyer: How firm are you on the $390? Would you be willing to go lower? I would like to get it soon.
Seller: I can't go too much lower.  What are you thinking?
Buyer: Would you perhaps go say.. $350? I could come pick it up?
Seller: I'd be willing to split the difference and go with $370.  Are you paying cash?
Buyer: I sure am. Would you perhaps do $360 and ill throw in a lawn mow for free? 
Seller: I really don't think I can pass that up.  If you're paying cash and mowing the lawn, I'll do the $350 just for you!
Buyer: Awesome, Ill be there soon with my pet goats!
Buyer: 
Seller: Oh man.... I'll be waiting!  ;)
Seller: 

Output (English): accepted