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.

Example Input: Seller: Hi how are you doing?
Buyer: Good.  How are you?  I am interested in your phone is it still available?
Seller: It is its like brand new! the only condition is that is locked to sprint's network so you will have to use them. I am only asking  99 dollars for it which is an absolute steal!
Buyer: That is not really a steal sorry to tell you.  That same phone on the Sprint network is only $62 at walmart so I could give you $55
Seller: I just looked it up they go for 150 at walmart the lowest i will be able to go is 80 dollars will you accept that?

Example Output: phone

Example Input: Seller: Hello, what can I do for you today?
Buyer: You repair macs, huh? 
Seller: Yes, that is correct. Where looking something in particular?
Buyer: I spilt water on my macbook while laughing at funny memes on Tumblr. The mousepad doesn't work anymore. How much would that be to fix?
Seller: Honestly, the whole thing is pretty damaged from the looks of it, it would be just as cheap and faster to get one that is already refurbished.
Buyer: Come on, an Apple technican wouldn't say that. Do you guys have an external mice I could buy from there? 
Seller: I'm afraid not.
Buyer: How much would a refurbished one cost? 
Seller: Well, they normally go for around three hundred, but I can work with you on the price.
Buyer: I know that some refurbs look better than others. I'll take the worst looking one, that still is functional, for $220.
Seller: Hmm, I do have one that is a bit beat up. I think 220 is good.
Seller: 
Buyer: 

Example Output: electronics

Example Input: Seller: hello!
Buyer: Hi! I'm interested in perhaps getting this bike for my son. What size is this bike?
Seller: It's pretty small, good for maybe a 5-6 year old kid or someone just learning to ride, hence the training wheels
Buyer: My son is 5, so that would be good. Have you had any trouble with the brakes? The ad said they're only two years old.
Seller: no, he out grew it quickly, the brakes are like new
Buyer: Are the tires in good condition?
Seller: very, he grew so quick, he barely used this thing
Buyer: Could you take $15? I can come pick it up right away.
Seller: sure, we want to gone, come and get it!
Seller: 
Buyer: Okay!
Buyer: 

Example Output:
bike