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: 'No. I won't part with any firewood because I can't stand being cold, and you can have 2 foods if you have a larger group if you give me 1 water. 🙂🙂' 'Sorry, that's not going to work for me.  ☹️ You have a water purifier? Doesn't sound like extra water is necessary.  I am in a hot, dry climate.  I can give up all the firewood to you, if you can leave me the three packages of food.  I would also like 2 waters.  ' 'Sorry but I'm willing to give up all the water for 1 food at least. I already mentioned above that I don't plan on hunting or fishing and I plan on being out for a while. That's my final offer.'
Utterance: 'Okay, I will leave you all the firewood and 1 food, and I will take two food and three water packages. I am willing to finalize that.☹️'

SOLUTION: No

PROBLEM: Context: 
Utterance: 'Hi!  The weather is going to be a lot colder than I anticipated, so I need extra firewood.  Would you be willing to give some to me?'

SOLUTION: Yes

PROBLEM: Context: 'I dont think I am okay with that ☹️. Food is essential to our groups morale when camping. We would like 1 additional food preferably.' 'Well you guys did say you did not care much about large fires. What if you gave all the firewood in replace for the water and you can still keep 1 food?' 'So I would get 3 water and 1 food and youd get 3 firewood and 2 food?'
Utterance: 'Yea that seems like an alright trade to me 🙂'

SOLUTION:
No

