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!  I'm going to be heading out on a big camping trip and will need to take some extra supplies.  Are you going camping as well?' 'I am also going camping! What do you think you're going to need the most of? What are your preferences?'
Utterance: 'It's going to be hot during the day where I'm going so I'll need some extra hydration.  So water is my main priority.'
Yes

Context: 'Hey!🙂 How are you? What were your plans for the weekend?' 'Hi. I'm doing great. How are you? I'm planning on going camping.🙂' 'I'm great! Me too! did you have any specific plans? I wanted to make an extra fire to cook with and cook a nice meal. '
Utterance: 'Yes. I'm actually taking a large group of people. Some friends and family are going and I kind of also wanted a bit of extra firewood. 🙂'
Yes

Context: 'How many family members do you have? ' 'Me, my wife and our two kids.' 'I could use 1 package of firewood if your family has other heating options like a butane food cooker.'
Utterance: 'I'm sorry, we really don't have any other options. I could really use 3 packages of firewood--I just can't risk a cold weather injury. Plus I promised everyone we'd be doing things the old fashioned way.'

Yes