Given a text passage as input comprising of dialogue of negotiations between a seller and a buyer about the sale of an item, your task is to classify the item being sold into exactly one of these categories: 'housing', 'furniture', 'bike', 'phone', 'car', 'electronics'. The output should be the name of the category from the stated options and there should be exactly one category for the given text passage.
Q: Buyer: Hi, I'm interested in your indoor bike
Seller: Great, it is in excellent condition. I had a leg injury and I really couldn't use it after I bought it.
Buyer: Oh I'm sorry to hear that, I wondered if anything is wrong with it. So it is in working order and you just can't use it due to your injury?
Seller: Yes, there is nothing wrong with it at all. I have all manual for it also. I also can put the mat that I bought to go under it with it. I'd like to get $150
Buyer: Oh, I must have read the ad wrong I thought you were asking $125? So is your price negotiable at all?
Seller: Oh, I'm sorry I forgot that I changed my mind at the last second and listed it at $125. They are 319 originally.
Buyer: Oh ok, would you come down to $75? I have cash and could come get it tonight.
Seller: I can't go that low. I would come down to $135 if you pick it up tonight but no Mat.
Buyer: That is more than your ad says...I could do $100 and I don't need the mat.
Seller: Sorry, that was supposed to be $105.00. I'll go $100.00. See you tonight then.
Seller:
Buyer:

A:
bike