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: 'Nice. Same, it's over 100 degrees where I live. 🙂' 'Yikes! It's a bit colder up here, that's why I would like to bring some extra firewood to stay warm at night.' 'Oh, I see what you did there. No problem I have plenty of firewood for you buddy. 🙂'
Utterance: 'Great! What extra supplies would you like to bring?'

A: No
****
Q: Context: 'I wish we could split packages in two!  How about if I give you another food and I keep two firewood?' 'that is ok, the original you stated will work, 2 food, 2 water and 1 firewood for you, and 2 firewood, 1 food and 1 water for me , i need to lose weight anyways ' 'Well now that you mention it, I could lose a few pounds 😮'
Utterance: 'haha but you enjoy hiking, i do not. '

A: No
****
Q: Context: 'But you need firewood for leisure, whereas I need firewood for survival.' 'Well it will keep us warm at night, too. I am very keen on at least one firewood for myself. ' 'Ok. How about I take 2 firewood and all 3 food? You can have the rest.'
Utterance: 'Can I get at least one food?'

A:
No
****