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 am good with that how many waters do you want can i have 2?' 'Sure we can do that 🙂' 'ok so i get 1 food 2 firewood and 2 water? sound fair?'
Utterance: 'Absolutely that sounds great!'

SOLUTION: No

PROBLEM: Context: 
Utterance: 'I need the firewood and the food, you can have all the water.'

SOLUTION: No

PROBLEM: Context: 'I prefer two water and one food. I can understand why you need the extra food items. I'm not much of a snacker but do drink a lot of water all the time. Keeps me from eating more!🙂' 'Lol, it seems it was easy for us to come to a deal!  I'm super bad at drinking water (trying to get better) so I don't feel I'll need as much.  Do you want all of the firewood or should I take one and you take two?  ' 'I don't have a preference on the firewood. You may have two if you like. It's so hot that I don't cherish the idea of a fire BUT it does keep the bugs at bay!🙂'
Utterance: 'Ooh, I didn't think of that!  I'm not a huge fan of fire but I'm even less a fan of bugs.  I'm good with two in that case.  I think we still have to meet the 10 message minimum before we can submit a deal.  So how's your day going?'

SOLUTION:
Yes