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: 'I need the food and water.  You can have all the firewood.' 'hello how are you?  I need the food the most because I ran off and left mine sitting on my kitchen counter.  I think we can agree upon you having 2 water but I need 2 food' 'I'm going hiking, and I really need food, it works up an appetite.'
Utterance: 'Well I didn''t bring any with me so I really need two.  I am willing to give you 2 waters.🙂'
[A]: Yes


[Q]: Context: 'I need all three of the firewood and three water.  You can have all the food.' '😮 May I ask why? I do need food, but I need some firewood as well.' 'I need firewood to cook the fish I plan to catch.  I don't really need more food, but I can use a little water too, since it's warm.'
Utterance: 'I need firewood, because I have a medical condition that causes my veins to close if I get too cold at night. I don't mind sharing the water.'
[A]: Yes


[Q]: Context: 'Hello. I would consider giving you 2 waters for 3 firewood and 2 food. I have a large family so the additional firewood will help with warmth and cooking food. 🙂' 'That sounds like you could  really use the extra warmth for your family' 'Yes it is very much needed. My family doesn't have a lot of extra bedding so having the warmth of a fire will help make sure we don't get cold at night 🙂'
Utterance: 'Okay I am willing to take your offer as I think you need the firewood more than me and I could use the extra water for hygiene related issues.'
[A]:
Yes