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!  I'm going to be heading out on a big camping trip and will need to take some extra supplies.  Are you going camping as well?' 'I am also going camping! What do you think you're going to need the most of? What are your preferences?'
Utterance: 'It's going to be hot during the day where I'm going so I'll need some extra hydration.  So water is my main priority.'

Ex Output:
Yes


Ex Input:
Context: 'I can't do that. Truth is I need the firewood and I was hoping you didn't need it. I propose I keep 1 firewood, 3 waters and 2 food and you take the rest?' 'I would do this instead: 3 firewood, 1 water and 2 food.' 'That's not going to be a fair offer, you'll need to do better than that or I don't think we can come to an agreement'
Utterance: '3 firewood, 1 water, 0 food'

Ex Output:
No


Ex Input:
Context: 'I have been camping a few times and pretty much know what I need to be comfortable and healthy.  Warmth and hydration are important for me.  So, I am thinking 2 firewood, 2 water and 0 food.' 'Since I have never been camping before, why do you think you need 2 firewood?' 'Unfortunately, I have arthritis so being sure to keep warm and the dampness away in the evening, heat is important for me.'
Utterance: 'Ok.  I am worried about animals and bugs so I would prefer 2 firewood.  But I am happy with the 3 food🙂'

Ex Output:

Yes