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: 'Hello - I would love be able to split some supplies with you🙂. I could use some extra firewood so maybe i could take 3 and maybe you could have some extra food? ' 'Maybe I could take 2 firewood 2 food and 0 waters?'
Utterance: 'I was planning on staying up all night and keeping my fire going all night.  Honestly I could give you all the extra food if that helps you if I could please have the 3 firewood?  We could split the waters'
Yes

Context: 'Hello, I'm in a strong need for food and water. Please let me have a few packages of food and water. I'd gladly trade all my firewood for it.' 'Hello. Wow! That does not sound good. My sister just called and let me know she will be coming tonight. She is bringing food so i have plenty to share. 🙂'
Utterance: 'That's some good news. 🙂 Are you sure she is going to be bringing food with her?'
No

Context: 'i need the firewood because i tend to catch a cold easily and also scared of the dark. i can give you 2 water and 2 food for 3 firewood and i food' 'will you allow me to get 3 waters and you can have the 3 firewood and 2 foods? 🙂' 'yes i can agree to that, thats a good compromise'
Utterance: 'yay, thank you so much! to very I am getting 3 waters, 0 firewood, and 1 food?'

No