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.

[EX Q]: Context: '😮Sound good enough but since you know i can not do without having anything to sustain me whenever i am thirsty then i suggest you are free to take TWO of the water and since your food has also been stolen by bears and you don't make much left, then you can have the TWO of the food items too and leave the THREE firewood for me with ONE food. How does that sound? 🙂' 'I think we are getting very close to a good deal. Would you be willing to give me ONE firewood in case the stuff I have gets wet?' 'I strongly agree and shall we call it a deal now? 🙂'
Utterance: 'Like I said, we are close but I really would feel better with just one of the firewood. I'm afraid of not being able to build a fire. If you really need the firewood, however, then I would take one additional item of EITHER the water or food instead.'
[EX A]: Yes

[EX Q]: Context: 'Sounds good I will give you the 2 packages of food.🙂' 'So nice of you !!  Now can you summarize your needs?' 'I will need 3 packages of firewood. 1 package of food and 1 package of water. What are your needs?'
Utterance: 'Yes, you are absolutely right. Thank you very much !! I'll take 2 package of food and 2 package of water .'
[EX A]: No

[EX Q]: Context: 'OK, but how do we split up the water? Because it sounds like we both need some. What if you take all the food and I take all the firewood and then I get two waters and you get one extra?' 'I would prefer to have 2 waters since I agreed to give you all the firewood.' 'But I agreed to give you all the food. Now that you want two waters, I think I should have some food because I left a bag of my food at home. You get two waters and I get one of the food. Then you get the majority of both the water and food.'
Utterance: 'So I get 2 waters/2 food/0 firewood, and you get 1 water/1 food/3 firewood? I think that works for me.'
[EX A]:
No