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: 'Hi Howard you' 'Not quite fine over here' 'oh what’s wrong sorryto hear that'
Utterance: 'It is very cold out here and i need a lot of firewood packages'
[A]: Yes


[Q]: Context: '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.' 'So I get 2 waters/2 food/0 firewood, and you get 1 water/1 food/3 firewood? I think that works for me.' 'Yes, that's the plan. By the way, what do you need all that food for? You didn't say. I'm just curious.'
Utterance: 'I'm a bigger guy (6'3") so I eat a lot, especially after activities like hiking and kayaking. Same reason I want water really.'
[A]: Yes


[Q]: Context: 'hello, how are the preparations coming along?' 'Hi There, I'm doing okay with my preparations but I am worried that I don't have enough food or water for the next few days.'
Utterance: 'I also worried about those two items, especially water.'
[A]:
Yes