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: 'Hello, are there any of the three items that you want to be sure you have enough of? 🙂' 'I want to be sure that I have enough firewood.  I want to relax, sit around the campfire, and roast hot dogs and marshmallows.  What about you?' 'That sounds great! I like all three items, but I definitely want to make sure I have enough water, especially to drink and stay hydrated and full of as much energy as possible. I require a lot of liquid as a 6-foot-4, 260-pound guy!'
Utterance: 'I don't think the weather is going to be that hot, and I don't plan on doing any hiking.  So, I should need much extra water.'
Yes

Context: 'Yikes, that's not good. Water is very important, especially if you now have to take care of two people at your campsite now. I do have 3 packages of water but I don't think I can spare it all.' 'I tell you what if we trade 3 food for 3 waters! I think that would be fair snice you said you need some food and snice I need some water. 🙂' 'Well, I do have some food but if I trade you all 3 packages of water, I won't have any at all. How about 2 packages of water, so we each have 1 package, including your sister?'
Utterance: 'How about this it think it will work out better for us and you snice you need fire wood too. You get 3 food and 2 firewood and and I get 3 water and 1 firewood. 🙂🙂'
No

Context: 'I need 2 woods first ' 'That is fine since there are 3 wood and I want 1. ' 'Then it is good deal.  I need two wood, 1 food, and 1 water.'
Utterance: 'I really need all the food, I have a lot of people to feed'

No