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: 'Hello, well I really need food. Have a lot of extra people.' 'Awesome - same, I also need a ton of food. Will firewood be of interest to you as well? I'll be happy to compensate in this way' 'Firewood is not overly interesting to me, but water is somewhat enticing.'
Utterance: 'Ok, great - I can give you all of my waters in exchange for a majority of the food and half of firewood'
No

Context: 'Same here. My kids are really looking forward to this. What is most important to you?' 'Firewood! I need it to cook my food and also to stay warm. What about you?' 'That is the same for me as well. My kids were really looking forward to making s'mores and telling stories by the campfire. That's all they've been talking about'
Utterance: 'Awesome, I'd be happy to negotiate that. What is your second most needed item?'
No

Context: 'We wantto do a lot of hiking on our trip and therefore I need extra water to make sure we stay hydrated. '
Utterance: 'hi! thats awesome i am going camping too, but not a lot of hiking. I am bringing 2 teenage boys so food will be very important for us'

Yes