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]: Seller: Hi, I have an iPhone for $200.  Are you interested?  It's unlocked.
Buyer: Yes, i am interested but the price is a bit high for me. I will offer 120 for it. Are there any problems with it?
Seller: No problems with the phone.  It works great.  I can give you a free headset too for the price of $200.  deal?
Buyer: I can't do 200. But, I can do 140
Seller: The phone is worth a lot more than that.  I can come down to $190 if you can pick it up today.  I'll still give you the headset.  deal?
Buyer: Okay, well how about we meet halfway. 170?
Seller: If you can come up to $177, we have a deal.  
Buyer: okay, that works for me. deal
Seller: 
Buyer: 

[A]: phone


[Q]: Buyer: I'm interested in your powerbank--I'd be willing to pay $9 for it
Seller: You know this power bank is brand-new right? So it's worth $20 and I already lowered the price to $12 so I could sell them quickly.
Buyer: Of course--there are comparable products on the market, inlcuding from amazon, for a similar price
Seller: I made sure to price them below the prices on Amazon. I will go down to $11 final offer.
Buyer: I'm willing to consider $11, are there other perks to this device I should be aware of?  I know that it has several protections built in--but I want to make sure
Seller: Yes the battery actually last a long time and it has five security protection.
Seller: 
Buyer: 

[A]: electronics


[Q]: Buyer: Hey, I was interested in the kid's bike you have listed for sale. It looks like it's in decent condition, but with you being the second owner and all, $20 seems a little high. Would you consider taking $10?
Seller: Hi we are the second owners but it's well taken care of. I even have the hardware to put the training wheels back on. 
Buyer: I think the highest I'd be willing to go is $12, but I'll come pick it up myself. 
Seller: I can do 15 since I did do some work on it to make it in top shape. Still a great price that covers my costs. 
Seller: 
Buyer: That seems fair.
Buyer: 

[A]:
bike