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: 'Hi I would like to trade you food for some water 🙂' 'How many food would you like to trade for water?'
Utterance: 'How about 2 Water for 3 food?'
[A]: No


[Q]: Context: 'no its not i give you i water i get 1 food and 1 firewood' 'We only have 3 of each to divide up.. so yes, you're going to have to give me one more on an item.. but in exchange I'm giving you 1 more on two different items.  I'm getting 4 items in total, you're getting 5.. - You're essentially netting 11% more 'items' than I am in this deal. ' 'thats the point as you need water so badly'
Utterance: 'Correct.. I do.. but if you're not willing to budge on this where you're still netting more overall value I understand - I'm bummed but I understand.'
[A]: No


[Q]: Context: 'Okay, If it is the case then you need food. How about you take all 3 food and I will take all firewood' 'That works with me. Can you list everything you are taking so we can make sure we are on the same page? ' 'I will take 3 firewood, 1 food, 2 water. You will get 0 firewood, 2 food and 1 water. Is everything correct'
Utterance: 'Sure, sounds like a deal!'
[A]:
No