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 would love to have the Firewood the most. ' 'Unfortunately I need firewood the most too. How about I take 2 firewood, 2 food, and 1 water?' 'I feel that I am not getting a fair deal. '
Utterance: 'Then what do you think is fair?'

SOLUTION: No

PROBLEM: Context: 
Utterance: 'Hi there! Curious as to what's on your mind regarding each item. I have my own preferences, but will share after you.'

SOLUTION: No

PROBLEM: Context: 'Hi. I'd like to have all the food packages for my children and two of firewood. Will you accept it🙂🙂🙂' 'I apologize but that will not work. I have a diabetic and need to make sure they will have enough food for a hike. So I would like to take two food packages, one water, and two firewood. '
Utterance: 'That won't work. Because, we are planning for a campfire. And so, we are in need of fire wood. I hope you understand.🙂🙂🙂'

SOLUTION:
Yes