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: 'Hello! I would like make a deal with you on firewood, water and food! Are you interested in any items ?'

SOLUTION: No

PROBLEM: Context: 'Hello!  I'm looking forward to a big camping trip I've been planning for a long time this weekend.  How about you? Do you have any plans?'
Utterance: 'Me too!!! I love camping! All that activity gets me wanting to indulge on snacks and then water to quench my thirst!'

SOLUTION: Yes

PROBLEM: Context: 'ok what do you have in mind?' 'Well if I gave you a majority of the water, I would like 1 water, 3 firewood and 1 food.' 'so I would have 2 water, 2 food and 1 firewood? My kids were looking forward to making s'mores. If I could get 2 water, 2 firewood and one food, that would be great!'
Utterance: 'You would get 2 water and 2 food, I would get 1 water and 1 food for hiking and 3 firewood for having to stay out longer in the dark to complete my hiking goals.'

SOLUTION:
Yes