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: 'Okay! Sounds fair! Where are you heading out to camp?' 'At a campground near where I live that is on a lake (although they call it a creek!).' 'That is convenient that it is so close 🙂'
Utterance: 'Yes-hope to have a good time. It has been fun dealing with you-hope you have a good camping trip as well.'

Ex Output:
No

Ex Input:
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.'

Ex Output:
Yes

Ex Input:
Context: 'Yep. I am excited. I could really use the decompression and time away from society. ' 'I agree, can't wait to unplug. As far as supplies go, I think its going to be hot and sunny where I'm going, wouldn't mind a bunch of extra water.' 'Water is extremely important to me too. I can give you 2 waters if you give me all 3 firewoods. '
Utterance: 'Hmm, ok, thats pretty fair. I do have a larger group going as well, so would it be okay if I got 2 extra food then?'

Ex Output:
Yes