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: 'Good morning! Are you excited to go camping this weekend?'
Utterance: 'Yes, how about you! We are headed to Joshua Tree NP to do some rock climbing and hiking. '

Ex Output:
No


Ex Input:
Context: 'HI. I'd love to get 2 additional packs of firewood. The weather forecast was for much warmer weather here and I just didn't bring enough with me. I also left my additional sweatshirt at home. I'd be happy to give you one additional water and two of food.  🙂🙂' 'Well I had a really great day fishing today and I would like to have some extra firewood so I can cook all of this fish.  How about I take the 3 packages of firewood and you can keep 2 additional food packages in return.'
Utterance: 'You really did have a good day didn't you! Sounds like fun. How many fish can one person eat? If I don't have the extra firewood I'm going to be really cold tonight. ☹️'

Ex Output:
Yes


Ex Input:
Context: 'Oh cool. What supplies do you prefer to take the most of?' 'I do a lot of hiking mostly, love to take scenic photos. I usually carry food and water supplies?' 'Me too. I am not good at hunting or fishing. So I generally try to take extra food'
Utterance: 'Haha I suck at those activities as well. I don't usually don't eat a lot, so I'm happy to exchange some food supplies for water supplies. '

Ex Output:

No