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 would like to have two bottles of water and in trade will take 1 food and firewood for a higher amount of water.' 'Hello. I would consider giving you 2 waters for 3 firewood and 2 food. I have a large family so the additional firewood will help with warmth and cooking food. 🙂' 'That sounds like you could  really use the extra warmth for your family'
Utterance: 'Yes it is very much needed. My family doesn't have a lot of extra bedding so having the warmth of a fire will help make sure we don't get cold at night 🙂'
Yes

Context: 'Hello there?' 'Hi! How are you?'
Utterance: 'I am fine. How is your camping trip going?'
No

Context: 'No I think I need all the water. I'm in the desert and there's absolutely no water supply. ' 'so you want two firewoods and three waters and I get everything else? ' 'That sounds good to me!'
Utterance: 'I really need at least two firewoods to cook with though, or one water. How can we make this work?'

Yes