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.

Context: 'Can you spare some water? I need to take medication and I have run out.' 'Hi there, that sounds important. Yes, we can make sure you get some water. How does 1 package sound?'
Utterance: 'I'd rather have 2, can give you all of my food for all of your water?'
No

Context: 
Utterance: 'Hi! I'm really hoping to get a lot of water. I love outdoor activities like hiking and kayaking so I'll need to stay hydrated on the trip.'
Yes

Context: 'I would like 2 wood, 1 water and 1 food. You would get 1 wood, 2 water and 2 food.' 'I don't need any wood. Do you have any alternatives?' 'I think my original offer is fair. I want you to have your most desired item (wood) and I get mine (water).'
Utterance: 'Ok. 🙂 '

No