TASK DEFINITION: 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.
PROBLEM: Context: 'In Arizona, so I know it'll be hot. How about you? ' 'Same! At least, I won't need firewood, because it will be so hot. I'm very worried about the water situation though. It's just going to be me out there and the only fresh water is at the base of the canyon, and that's a really long and dangerous hike down for one person.' 'Well, if you give me 2 firewood and 2 food I will take just one water and you can have 2. I don't want you getting hurt!'
Utterance: 'That could work, but if possible I would like a little more food then, in case I do need to hike to the stream on the last day. I only have a couple of traps with me and those can be unreliable for food. Would it be ok if I take 2 water, 2 food, and 1 firewood?'

SOLUTION: Yes

PROBLEM: Context: 'Well that is not going to work well for my family of 8 now is it? Haha. I think we can come to some sort of agreement though.🙂' 'What do you propose?' 'I really need food too, but I am willing to deal and let my kids go hungry I guess ☹️ I propose I get one food, 3 firewood and 1 water.  '
Utterance: 'Will you please give me one firewood? I may run out of what i have. Just one.'

SOLUTION: Yes

PROBLEM: Context: 'Looks like we both have a high value for food. I will give you 3 packages of water and you give me 3 packages of food.' 'What is your least preference?' 'My least preference is water.'
Utterance: 'I prefer water than firewood since we like cold and won't probably need it much'

SOLUTION:
Yes