Task: Dialogue State Tracking
Input (English): Buyer: Is this still available? What service does it work thru
Seller: its unlocked so you'll find that it works with any carrier in US.
Buyer: Does the camera still work well
Seller: The camera works great. lens was kept extremely clean. and youll have a ton of pictures to store on the 32gb on board memory.
Buyer: How badly is the screen cracked?
Seller: small crack on lower right side. It was in a case when it took the fall, which just baffled me. Im due for an upgrade so ill be getting that done in next day or two. 
Buyer: Due to it being cracked would you be willing to accept $55?
Seller: How bout I deliver it to you for $60, and ill toss in the case and a belt clip?
Seller: 
Buyer: Ok sounds good that will save me some gas
Buyer: 

Output (English): accepted