Task: Dialogue State Tracking
Input (English): Seller: Hrello I'm interested in your iphone. Is the crack really noticeable?
Buyer: I think you are confused. You are selling me a phone.
Seller: I'm sorry. I am! Are you interested?
Buyer: LOL, Yes. Is it unlocked by chance?
Seller: Yes I have gotten it unlocked from AT&T and you can use it on any carrier that is GSM, I think, or maybe CDM. Sorry
Buyer: Thanks. that sounds great. I read there is a small crack. Does it interfere with the screen at all?
Seller: No, not at all. You can't even notice it and that area on the screen works normal as well
Buyer: 200 is pretty good, but the crack makes me nervous. Would you take 150?
Seller: I understand, yes $150 seems fair I think. Can you pick it up today?
Buyer: yes. 150 and I pick it up right now if that works.
Buyer: 
Seller: Perfect!
Seller: 

Output (English): accepted