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.
--------
Question: Context: 'I am great, i am really excited about camping how about you?' 'Same here! Its my family's first time out together and we are at the camping already.' 'Nice, are there any extra supplies that you will really need?'
Utterance: 'At the camping site. Yes, I would like some water and food to refill the used packs'

Answer: Yes


Question: Context: 
Utterance: 'Hi there! Curious as to what's on your mind regarding each item. I have my own preferences, but will share after you.'

Answer: No


Question: Context: 'I have firewood, what I need mainly is water, then food' 'Ah, I see. I have plenty of firewood as well but mostly need food and some water.' 'so let me suggest a split, I get two water and two food, you get one food, one water and three firewood'
Utterance: 'I really don't need that much firewood. How about You get two water, one food and one firewood. And I'll take two food, one water and two firewood.'

Answer:
No