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.

[Q]: 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.'
[A]: Yes


[Q]: Context: 'I need all three of the firewood and three water.  You can have all the food.' '😮 May I ask why? I do need food, but I need some firewood as well.' 'I need firewood to cook the fish I plan to catch.  I don't really need more food, but I can use a little water too, since it's warm.'
Utterance: 'I need firewood, because I have a medical condition that causes my veins to close if I get too cold at night. I don't mind sharing the water.'
[A]: Yes


[Q]: Context: 'I too need extra water, but I'm willing to negotiate on the other things if you are! 🙂' 'If I take 2 waters, will you accept 2 firewood?' 'You take 2 waters, I'll take 2 firewood and 2 food?'
Utterance: 'What about you take 1 water and the firewood.  I take 2 waters and all the food'
[A]:
No


