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 self-need strategy, otherwise output No. self-need is a selfish negotiation strategy. It is used to create a personal need for an item in the negotiation, such as by pointing out that the participant sweats a lot to show preference towards water packages.

Context: 
Utterance: 'Hi how are you? I have a few medical issue and do need to stay warm so fire wood is important to me. What is important to you? '
Yes

Context: 'No it's not.  Since my fever is very high and my chills are very bad I'd appreciate you letting me have 2 firewoods and in exchange you could have all the extra food.' 'That is an interesting proposition.  What about the water?' 'I think if you let me have 2 waters I might survive this scourge!'
Utterance: 'I think that your reasons are very compelling.  I would also like to survive.'
Yes

Context: 'A bit and you? I'm looking forward to figuring out a deal that helps us both!' 'That's great. 🙂 We are planning to prepare food over a fire.' 'Nice! What are your highest priority items?'
Utterance: 'We need a moderate amount of everything and I think we can work something out successfully.'

No