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 sooooo excited too! I can't wait to sit by the fire! 🙂' 'Me too!!!! That is what I am most excited about. I was actually hoping you might have some firewood to spare?' 'Gosh, that's a bg favor because I need the firewood. I will give you all of the firewood if you will give me all of the food. How's that?'
Utterance: 'Fair enough! Thank you! I would really appreciate any extra water that you have too?'

SOLUTION: No

PROBLEM: Context: 
Utterance: 'Hi! I'm really hoping to get a lot of water. I love outdoor activities like hiking and kayaking so I'll need to stay hydrated on the trip.'

SOLUTION: Yes

PROBLEM: Context: 
Utterance: 'Hi, how are you?'

SOLUTION:
No