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: 'hello' 'Hello, what would you like for the packages?'
Utterance: 'we are cold and hungry so we need firewood and food the most, what about you?'
[EX A]: Yes

[EX Q]: Context: 'Hey, I am excited to go camping too!  Would you mind sharing your top priority items with me so that we can come up with a fair deal?  Ideally I would love 3 firewoods, 3 foods, and 2 waters just like you aha.  But perhaps we can each get at least 3 packages of our highest priority item ' 'Hmmm, I think I really need the firewood.  I brought softwoods and they burn out quickly so I don't think I'll have enough wood to keep me going through the night. I get kinda scared without the fire.  What is your priority?' 'Okay, well firewood is also my top priority since it will be so cold tonight.  But I would be willing to take only 1 firewood (and give you 2) as long as I got 2 foods and 2 waters '
Utterance: 'Thank you for the offer on firewood.  I think that sounds fair.  However, I really would like at least 2 waters as well. '
[EX A]: No

[EX Q]: Context: 'I dont need the firewood as much. ' 'That is great for me. I guess i will take all three.🙂' 'sure what other preferences would you like '
Utterance: 'I need a lot of water too. Thank you for understanding.'
[EX A]:
Yes