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: 'I need more food since I have a huge family. Can you give me all food i give you all water?'
Utterance: 'i need a little more food because i forgot that we where staying longer and i forgot some of my food. Can i give you 1 food package please? '

SOLUTION: Yes

PROBLEM: Context: 'It was going great until a bear came and took all of our food 😮' 'Oh no, that's not good.  I still have some left over, but we're running out of firewood to use to heat it.' 'Seems like we are in the same boat, the bear tore our tent to shreds so we are sleeping outside and it is cold☹️'
Utterance: 'Sounds like a rough camping trip.  It has been pretty cold lately.'

SOLUTION: No

PROBLEM: Context: 'My favorite thing to do is sing songs and tell stories around a campfire.  Consequently, I was really hoping to get some additional packages of firewood. 🙂' 'I do love sing alongs around the campfire. I usually go hiking and it requires a lot of energy and fuel. Maybe I can get additional food packages?' 'You'll definitely need some additional calories if you want to do extra hiking.  I will give you all the additional food if you give me all the additional firewood. '
Utterance: 'Sounds like a deal, maybe split the water packages evenly. Can't be dehyradated while camping 🙂'

SOLUTION:
Yes