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: 'Well I planned on spending a few extra days here at this camping site with my family so the extra water will really come in handy for me over the next few days.  I can offer you an extra package of firewood to keep the 3 packages of water.' 'That makes total sense.  I will let you keep all 3 of the water packages.  If I take the extra firewood for all 3 packages then I can probably boil a lot of the water to get the harmful bacteria out.  I really appreciate your generosity 🙂.  ' 'No problem.🙂  So I will keep the 3 packages of water and, since I am giving you all 3 packages of the firewood I will take back the 1 food package and keep all 3 of the food packages.'
Utterance: 'I would still like at least 1 package of the food please.  There has been a lot of rain in the area, but I think some poisonous mushrooms maybe prevalent in the area, so to be extra cautious I would like a little spare food on hand.'

A: Yes
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Q: Context: 'The weather is going to be really hot. Could I have 2 water in exchange for you receiving 2 food and 2 firewood?' 'I have a low immune system and need to stay warm how about I get all 3 firewood in exchange for the 2 water. ' 'I will agree to 3 firewood for 2 water. Maybe I should extra food though so 2 food for me🙂'
Utterance: 'I can agree to 2 food. You get 2 and I will get 1 food. That sounds fair to me. 🙂'

A: No
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Q: Context: 
Utterance: 'I'm thinking I'l get 2 firewood, and 2 water and 1 food. I'm not sure what you need, but we can figure it out. '

A:
No
****