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 need   food and water the most . There are 3 of us.🙂' 'Your most needed item is water or food?' 'Most needed is both food and water. I guess food is my highest priority .🙂'
Utterance: 'Ok perfect, the item I need the most is water because I need to hydrate.  What do you think if I give you 2 food and I keep 2 of water. '

SOLUTION: Yes

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: 'Hey there how are you?'
Utterance: 'I am fine friend. I need a lot of firewood though. It is freezing'

SOLUTION:
Yes