Task: Dialogue State Tracking
Input (English): Buyer: a great bike for my son 499 
Seller: That is too low. I need a serious offer please. It is in great condition and normally goes for a lot more money. I can drop the price to $1000.
Buyer: the price on ebay is below 1000 maybe you have something much different but ejoe epik se 2016 ridden to maintain battery listing and my offer is 500
Seller: $999 then. Definitely not $500. I'm not giving you the bike for less then half price. Be reasonable. Also, speak English.
Buyer: lol the name of bike is e-joe epik se 2016 700 is that good
Seller: $800 and that's my final offer.
Buyer: this would be a opportunity for my son to enjoy a smooth ride on his new bike looking forward to pick it up as soon as possible 800 good deal
Seller: Ok then. Enjoy the bike.
Seller: 
Buyer: 

Output (English): accepted