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: 'i need two food items and one water' 'I will take 2 waters, however I would like 2 food and you can have 1 food and 3 firewoods' 'one food is not enough i am pregnant and i need to eat many meals'
Utterance: 'My friend is ill and needs to eat to survive. How about I take 3 water then and you can have 2 food and all of the wood?'
[A]: Yes

[Q]: Context: 'You can all the food if you need it.🙂' 'Thanks!🙂 Do you need any water packages?' 'Yes. Since the days are on the warmer side, I'm a afraid of getting dehydrated. I would love to have all of it...'
Utterance: 'Ah, that doesn't work for me. I would need to have at least one water because one of mine has a leak (and I have an extra person joining me).'
[A]: Yes

[Q]: Context: 'That won't work. Because, we are planning for a campfire. And so, we are in need of fire wood. I hope you understand.🙂🙂🙂' 'I understand. We are also planning a campfire, and have a lot of young kids who will need the fire to stay warm. So that's why I feel I need two firewoods. 🙂' 'Sorry for apologize. Here we are having old aged people here. I need two packages of food. Otherwise two of firewood.🙂'
Utterance: 'I understand. I am willing to give you two packages of food if I can have two firewoods. I would also like two waters due to it being hot out for our hike. 🙂'
[A]:
Yes