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: 'I can trade more food but I need a bit more water.  ' 'I do need the water as well, I can  trade more firewood.' 'No I want need at least two packages of water.  I can give you two packages of food and all my firewood.'
Utterance: 'Sorr I can give you 1 water only or I would not have enough for myself. '
Yes

Context: 'You are being very kind then, im elderly so trying to make fresh water by boiling it from getting it from a river was concerning to me. How about you take all three of the food for your kiddo's' 'That sounds fair. The kids can bathe in the stream. We are good with 2 food packs.' 'Lol, wish i could. Then you take all 3 of the firewood, I'll take 2 of the Water and 1 of the food, sound good?'
Utterance: 'Just to be clear, I get 3 firewoods, 1 water and 1 food. You get 0 firewood, 2 waters and 2 food packs?'
No

Context: 'I also want to do a lot of hiking while we are camping since the kids have been cooped up in the house for so long. They are so restless now since they don't have their usual things like PE classes, soccer, and hockey. My end goal is to tire them out lol. Besides a nice meal, what other things do you plan to be doing while camping?' 'we want to explore the animals in the area birds and just enjoy all the nice views.' 'Cool, that sounds very nice and relaxing 🙂. It kinda sounds like my husband, he likes to do things like these with no concrete plan and just decides on the spot what he wants to do. The only problem with it is that he dumps all the planning on me so I have to make sure I have extra of ANY possible idea he has.'
Utterance: 'Yes we always get stuck making the plans so can I have 2 firewood and you get 2 food and 2 water? Please respond a little faster with your messages that would be very nice'

No