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.

Seller: Hi! are you interested in the bike?
Buyer: yes. i am
Seller: do you have an initial offer?
Buyer: well how com e it's so expensive? i've never seen a bike for over 1000
Seller: Sure! At this point, it's really priced to a specialist who can appreciate the rarity of a model in this good of condition. The bike itself is a joy to ride and the fact that you won't have to do any repairs is a bonus.
Buyer: alright. would you consider 800 bucks?
Seller: Hmm...I can do $900 if you can come pick it up?
Buyer: I can most definitely come and pick it up
Seller: And $900 is acceptable?
Buyer: yep. that's works for me.
Buyer:
Seller:
bike