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.

Q: Context: 'I am a big guy, so I will need some more food, how about you give me an extra food while you hold on to two' 'I can't give you all the water if you take one of the food, I'm very sorry.  I could take 2 of the food and 2 of the water if we do it that way.  I really need cooking supplies if I want this trip to be productive for me - it's why I was coming.' 'That wouldn't work for me, I will be going hiking during camping, so I need all of the water I can get'
Utterance: 'Well then maybe we can just do a trade, the water to you and the food to me.  And if I got two of the firewood, I'd have plenty of time to just boil and purify some riverwater instead'

A: No
****
Q: Context: 
Utterance: 'I have a medical condition that causes my veins to close up when I get too cold. I will thus need the 3 firewood.'

A: Yes
****
Q: Context: 'Sure, you can have two of the firewoods. 🙂' 'ok. so its two water, one food and two wood for me then?' 'That's right. And I get 2 food, 1 water and 1 Firewood'
Utterance: 'great. have a lovely trip'

A:
No
****