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.

Ex Input:
Context: 'Hello! How are you doing today?' 'I am doing great' 'Great! For our camping trip, I would love to take all the water and firewood. You can have all the food. '
Utterance: 'I really need the firewood,  It gets very very cold at night where I go camping.'

Ex Output:
Yes


Ex Input:
Context: 'so If I understand correctly, the Deal is I get 3 Food and 2 Water: While you get 3 Firewood and 1 Water?' 'I was just negotiating the water for now.  I was trying to do one at a time.' 'ah, I'm definitely ok with doing one at a time: A 2:1 split is definitely OK with me: The issue is, if we consider each individually, it might be harder to come to a deal, but I'm happy to do it your way.'
Utterance: 'How about you take 1 firewood, I''l take 2 and with food, you can have 2 and I'll take one package.  I have two very hungry boys!'

Ex Output:
No


Ex Input:
Context: 'What is your least preference?' 'My least preference is water.' 'I prefer water than firewood since we like cold and won't probably need it much'
Utterance: 'Ok, let me then give you 2 packages of firewood and 2 packages of water and you give me 2 packages of food. What about that?'

Ex Output:

No