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: 
Utterance: 'Hi! How are you today?'

SOLUTION: No

PROBLEM: Context: 'Hey there, unfortunately, I'm in a bit of a quandary with firewood too, as I am going to a place where it's fairly cold and will need more for heat. ' 'thats terrible! i broke my leg and wont be able to collect my own firewood , could i maybe get 2 packages? ☹️' 'Terribly sorry to hear that; it sounds like you won't be able to camp much in that condition. I assume you have someone coming along to help you because of your leg?'
Utterance: 'just a bunch of children under 5 who wont be able to gather firewood. so i desperately need at least 2'

SOLUTION: Yes

PROBLEM: Context: 'hi there, i'm hoping we can come to an agreement on these extra items 🙂' 'Hello, I would really like more food for my trip. If I can have all the food, and firewood, you can have all the water'
Utterance: 'Oh, that won't really work for me.  I was hoping to get extra food and water for this trip since I need water to take medication and would love the food to plan a special meal.  I'd like say, 2 food, 3 water and 1 firewood'

SOLUTION:
Yes

