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: 'It's been so cold these last few days, I'm worried that I didn't bring enough wood for the next few nights.' 'That is unfortunate. How about I give you are my firewood for all your food?'
Utterance: 'That is a very generous offer but I think I need to keep some food to be safe. Do you need any water?'
No

Context: 'I am good. How are you?' 'Doing good! Kinda slow today' 'I just started. Looking forward to your trip? I really need lots of water. I hope you will take that into consideration. '
Utterance: 'Yup I have water but need firewood to keep warm. My trip is going to be cold.'
Yes

Context: 'Ok thats nice, I need food more because I didn't bring much and that a problem,  What do you think if I give you 2 wood and you give me 2 food?' '🙂 Well let me counter it, more beneficial to both of us, you will get 1 water, 2 food and 2 firewood as I can easily find firewood in the forest.  The water due to my dry mouth illness, I need the most ☹️' 'Oh yes excuse me, I got confused, if you need water for me it's okay to give you the water you need.'
Utterance: 'Okay so my offer is good for you and me? 🙂'

No