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.

[EX Q]: Context: 'Wood is my highest priority. I need it to stay warm. I'm very cold-natured. What is your highest priority? 🙂' 'Oh that's good. Wood is not my highest priority since I get hot easily lol. My highest priority is probably food because I have a very high metabolism and get very hungry' 'I understand that. I also need food though, because I need the sustenance to help warm me up. So maybe 3 firewood 1 food and 2 waters for me?'
Utterance: 'I still don't think that is too fair though, since you would be getting 6/9 of the extra items and I would only be getting 3... I'm not an avid camper so I need extra amenities to make sure I survive haha. I am flexible on the water though - maybe we can compromise there. I am fine with you having all of the wood. Maybe we could give you 3 firewood, 1 food, and 1 water?'
[EX A]: Yes

[EX Q]: Context: 'okay how about if i only get 2 food packages and i give you 2 firewood. So we both gets something to help us/ Because i to at least 1 firewood' 'That would work for me if I get all 3 water still' 'How about you get 2 of the waters an i would take 1 of them? I need some water to stay hydrated '
Utterance: 'If you get two foods then I need more items overall'
[EX A]: No

[EX Q]: Context: 'I want 2 liters of water' 'Okay, you can take two and I will take one. ' 'Okay that's great'
Utterance: 'Can I take all three bundles of firewood so I can boil some of the water? '
[EX A]:
Yes