TASK DEFINITION: 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.
PROBLEM: Context: 'Actually, I think I may need more food than water. How about I take the food and we can split the water. You may have 2 waters, if you need them.' 'Sure then. You can take all the food. It's not really a priority to me. ' 'Great. So if I have three food and one water, you can have three firewood and two water. Would that work for your trip?'
Utterance: 'That's perfect for my camping trip. '

SOLUTION: No

PROBLEM: Context: 'In Arizona, so I know it'll be hot. How about you? ' 'Same! At least, I won't need firewood, because it will be so hot. I'm very worried about the water situation though. It's just going to be me out there and the only fresh water is at the base of the canyon, and that's a really long and dangerous hike down for one person.' 'Well, if you give me 2 firewood and 2 food I will take just one water and you can have 2. I don't want you getting hurt!'
Utterance: 'That could work, but if possible I would like a little more food then, in case I do need to hike to the stream on the last day. I only have a couple of traps with me and those can be unreliable for food. Would it be ok if I take 2 water, 2 food, and 1 firewood?'

SOLUTION: Yes

PROBLEM: Context: 'Hello! I also need firewood. It is my highest priority. Then, I need water next as a prority. 🙂' 'Yes that matches with my needs as well I need to stay warm due to health conditions and need plenty of water due to medicines. ' 'We could split the firewood and water. I can take two water and one firewood. 🙂'
Utterance: 'Ok what about the food? how about you take two and ill take one?'

SOLUTION:
No