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: 'Hi, how are you, ready for the big camping trip?!' 'Yep.  I am excited.  I could really use the decompression and time away from society. ' 'I agree, can't wait to unplug. As far as supplies go, I think its going to be hot and sunny where I'm going, wouldn't mind a bunch of extra water.'
Utterance: 'Water is extremely important to me too.  I can give you 2 waters if you give me all 3 firewoods. '
Yes

Context: 'Hello, I am very cold and need food and wood to remain warm. How about I get 3 firewood, 3 food and 1 water?'
Utterance: 'That doesn't really work for me because then I would get only 2 waters and nothing else ☹️. What do you think is your highest priority?'
No

Context: 'Okay, sounds good then.  I believe we have a deal then.' 'yes, we have a good deal. you want water from us' 'No, I want firewood and food.  No water.  I want 3 firewood and 2 food.'
Utterance: 'okay, that's great deal we can finalize a deal'

No