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: 'Wish it was an easy car ride.  We're miles and miles from a store and it's getting dark.  I don't do well driving in the dark.  I think we might be getting close to agreement.  As I understand it:  you would get 1 water, 2 firewood and 2 food portions?  Is that correct?' 'Actually, I suggested that you would get 1 water, 1 firewood and 1 food portion.  I can compromise with you though.  I would like 2 water portions, 1 firewood and 1 food.' 'Since I arrived with no water at all, I would definitely need at least 2 waters.  I'm afraid I don't have a lot of "wiggle room" with that.  I'm open for the other supplies.  Ideally, I would like to have 2 waters, 1 firewood and 1 food portion.'
Utterance: 'If that's the case, I would like 1 water, 3 firewood and 3 food portions.'
[A]: No


[Q]: Context: 'I can trade more food but I need a bit more water.  ' 'I do need the water as well, I can  trade more firewood.' 'No I want need at least two packages of water.  I can give you two packages of food and all my firewood.'
Utterance: 'Sorr I can give you 1 water only or I would not have enough for myself. '
[A]: Yes


[Q]: Context: 'thank you for that.' 'I'm glad we seem to have come to an agreement. This camping trip is going to be fun!' 'I'm so excited! So just to be clear: you get 1 food, 2 firewood, 3 water'
Utterance: 'Yes that sounds good to me! Enjoy your trip. 🙂'
[A]:
No