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: 'Hello. 🙂 What item did you need a little extra of?'
Utterance: 'Thank you for asking, I would really like some extra fire wood as I usually get cold and scared at night so I can keep a fire going.'
[A]: Yes


[Q]: Context: 'How many wood do you think you need?' 'I would like 2 of the firewood. What do you think? ' 'I don't need wood as I am usually warm so I think we can work out a deal. I like to have more water and I usually get thirsty.'
Utterance: 'That sounds good to me. 🙂 I think we can make a good deal.'
[A]: No


[Q]: Context: 'That could work, but I'm still a little worried I won't have enough food for 6 people. How long are you guys going to be camping for?' 'I will be camping for 3 day so I gotta have some food.  Although, I do understand your situation.' 'I see. Yeah, if any of us knew how to fish or forage, we wouldn't need as much, but we're all from the city, so our survival skills are pretty bad and we're going to be camping for almost a week. But I get that fish aren't super reliable for food either... ☹️'
Utterance: 'I understand.  So we have came to an agreement that I get 2 water, 1 firewood, and 1 food, is that right?'
[A]:
No