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: 'Oh, that does change things a lot. Diabetes is a hard disease to have to deal with. So you want more firewood than water? And less food than water?' 'Well, I don't know. I think I would like more water than firewood, but yes less food than water. I'm a pretty easy going person though! 🙂' 'Ok, let me know what you think and we will go from there. I do prefer more food and firewood than water though.'
Utterance: 'Okay, it sounds like we are pretty agreeable here. I will wait for you to make an offer if you would like to.'
No

Context: 'Hi! I want some additional packages of firewood, water, and food' 'Are you bringing guest?'
Utterance: 'I am a campaign partner'
No

Context: 'Me as well. What item is your greatest priority for your trip?' 'Firewood and my second priority is water. I'm open to negotiating though.' 'Glad to hear because I really need firewood and food. What do you propose?'
Utterance: 'I can give you 3 packages of food but I really need the additional firewood.'
No