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: 'No it's not.  Since my fever is very high and my chills are very bad I'd appreciate you letting me have 2 firewoods and in exchange you could have all the extra food.' 'That is an interesting proposition.  What about the water?' 'I think if you let me have 2 waters I might survive this scourge!'
Utterance: 'I think that your reasons are very compelling.  I would also like to survive.'
Yes

Context: 'Me too!! Though it's over 100 degrees these days. 😡' 'Well hopefully it will be cooler up in the mountains. What supplies are you in need of?' 'I am a big eater. I tend to eat a lot throughout the day. You? 🙂'
Utterance: 'Ha I get that! I'll need that too, but mostly water because my family wants to do a lot of hikes.'
Yes

Context: 'O cool🙂. I can give you all the water and we can split the fire wood. I need a least one firewood to make a fire for my son' 'I can give you one firewood if you can spare one food for me to eat while I am cooking.🙂' 'Ok if I can keep one water as well 🙂'
Utterance: 'I may not be able to go without the water. I am making a large pot of soup with homemade bread.'

Yes