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.

[Q]: Context: 'Hi - I'm so excited for our camping trip. I'm most excited about getting to eat food that I normally don't when I am home' 'Ooh what kind of food?! Like MRE? I'm going to need lots of water because I'm going to the High Desert.' 'Hello! camper, how are you? I need us to make a deal where we all benefit.'
Utterance: 'Yes, I expect that! You need food most and I need water, so let's propose an exact trade? 3 for 3?'
[A]: No

[Q]: Context: 'Food is actually my first priority but since it seems to be first priority for us both I thought we could split that. Water doesn't seem to be a priority for you so thought I could take that' 'My first priority is actually firewood. Food is my second. 🙂' 'Okay so would 2 firewood for you and 1 for me work, and 2 food for me and 1 for you?'
Utterance: 'I can definitely agree to that. What was your second preference? Water was my third.'
[A]: No

[Q]: Context: 'Well you can take all the firewood if it will help, would it be ok if i get all the food in return?' 'That works for me. How would you like to divide the water?' 'I am ok with you taking two waters since you are new to camping, does that seem fair to you?'
Utterance: 'Yes, that seems fair to me.'
[A]:
No