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: '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: 'Hi there - how are you today?' 'I'm doing well.  How are you today?' 'Pretty good. Just hanging out with our group. Looking forward to this upcoming camping trip. It's a college reunion weekend. '
Utterance: 'Oh.  That sounds fun.  I'm getting ready to go camping with my family next weekend as well.  It will be the first time that my kids have gone camping with me.'

SOLUTION: No

PROBLEM: Context: 
Utterance: 'The weather is going to be really hot. Could I have 2 water in exchange for you receiving 2 food and 2 firewood?'

SOLUTION:
Yes