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?' 'Hi! I am doing good.What about you?' 'Doing well, I'm exciting about my next camping trip with my family. '
Utterance: 'Yeah that's fine.What you need the most?'

Ex Output:
No


Ex Input:
Context: 'So, that would be 2 firewood, 2 food and 2 water for me and one of each to you? Thank you ' 'I would really like to come out of this with a bit more. How about 2 food for me and 1 firewood and water?' 'What are your current requirements on food so I can better understand your situation?'
Utterance: '☹️ I forgot most the food I was going to bring and only have enough for less than half the planned trip.'

Ex Output:
Yes


Ex Input:
Context: 'My primary concerns are staying hydrated, I have been feeling sick and throwing up from being so high up in the mountains. ' 'Oh, so sorry to hear that.  I can understand why water would be important to you.  I am worried about being too cold at night. My sleeping bag is not rated well for cold weather (I packed the wring one).' 'Oh I understand that for sure. I am not used to the cold weather either which is not helping. Would you be interested in a trade for water in exchange for firewood? '
Utterance: 'Well, I am worried about staying hydrated as well.'

Ex Output:

Yes