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: 'i hope we can come to a compromise 🙂, what is another priority of yours besides the wood?' 'Food is a second priority for me, as I will be metal-detecting as well, & cannot risk fainting from the heat. How about I give you two firewood (I don't think we can "share", haha), you can give me two food packages, and two water packages.' 'okay, I am willing to give up more food to get the firewood, I like your offer🙂'
Utterance: 'I do as well. I'm glad we could come to an agreement! 🙂'
[EX A]: No

[EX Q]: Context: 'Hello!  I'm going to be heading out on a big camping trip and will need to take some extra supplies.  Are you going camping as well?' 'I am also going camping! What do you think you're going to need the most of? What are your preferences?'
Utterance: 'It's going to be hot during the day where I'm going so I'll need some extra hydration.  So water is my main priority.'
[EX A]: Yes

[EX Q]: Context: 'but i don't have back up for firewood. i need at least 2 pack of firewood. then only it will be better for me' 'If I can have the 3 packs of food and 3 packs of water, then you can have 2 packs of firewood.' 'oh god. without food and water how can i survive in the camping trip?'
Utterance: 'This is true. Although we're negotiating for extra provisions.  I understand your situation, though.  I can use 1 pack of firewood, 2 pack of water and just 1 pack of food.'
[EX A]:
No

