The input is taken from a negotiation between two participants who take the role of campsite neighbors and negotiate for Food, Water, and Firewood packages, based on their individual preferences and requirements. Given an utterance and recent dialogue context containing past 3 utterances (wherever available), output Yes if the utterance contains the no-need strategy, otherwise output No. no-need is a cooperative negotiation strategy. It is used when a participant points out that they do not need an item based on personal context such as suggesting that they have ample water to spare. no-need can directly benefit the opponent since it implies that the item is up for grabs.

Context: 
Utterance: 'Hello, what is your preference for supplies?  I would prefer to have as much extra firewood as possible, but am relatively indifferent to the rest.'
Yes

Context: 'Nice! What are your highest priority items?' 'We need a moderate amount of everything and I think we can work something out successfully.' 'got it, OK I'll start then. I'd like at least 2 firewood'
Utterance: 'Okay. we brought some of our own food so I don't need much of that either.'
Yes

Context: 'Hi, I will need alot of water as I need it to stay alive.' 'I agree, with camping i feel there are many uncertainties. Finding clean water would be too difficult, best to take as much water as possible. ' 'I will also need some Firewood too to start a fire'
Utterance: 'I feel for firewood we dont need as much, as we are going to be camping, with that means, in my opinion, with branches and brush available, maybe we can take 2 fire woods, what do you think?'

Yes