Task: Dialogue State Tracking
Input (English): Seller: Hi. How are you ?
Buyer: Good u
Seller: good. have you read through the listing yet?
Buyer: Yes very interested 
Seller: as it says in the listing, there are some small ccosmetic issues, but the headphones are in excellent working condition. are you ok with that?
Buyer: Does really work or it just sales pitch
Seller: It really works. Guaranteed. If you buy and see it doesn't work, you can return it.
Buyer: Do you accept trades
Seller: depends. what would you trade for?
Buyer: Firearm
Seller: what type? good condition?
Buyer: Hk416 excellent condition
Seller: ammo included?
Buyer: No
Seller: ill accept the trade
Buyer: Sounds good
Buyer: 

Output (English): rejected