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 there, great looking bike!
Seller: this is a rare antique bicycle with an unique history and I have its documentation. you can get this cool 3 speed collectors item for an easy price of $250
Buyer: Yeah, it looks nice. Does it come with anything else?
Seller: its a rare vintage color (purple) and I have it certified by the antique dealers of america. its 65 years old, and a great addition to any antique bike enthusiast.
Buyer: sounds good. I can offer you 140 for it?
Seller: if you come and pick it up, i can let it go for $210
Buyer: hmmm...still tough for me. I don't really need the locking fork, wo that can you meet me at 150?
Seller: tell you what. I will drop the bike off to you. the locking fork and key come for free. $200 final offer.
Buyer: well, that's real nice of you! If you meet me at 190 im game :)
Seller: done
Seller:
Buyer:

A:
bike