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.

Example Input: Context: 'I figure I could always get some at the stream 🙂' 'Yes, I agree, but are you aware of the water quality at your campsite? ' 'Not completely aware but I do have a filter that I brought from home. What are your needs?'
Utterance: 'Ok me too! I am concerned the most with firewood as it is the basis for my camping activities: campfire, story telling, and producing heat. '
Example Output: Yes

Example Input: Context: 'im sorry i mistyped. okay yes thats a deal. so last we have to talk about the wood. what do you think' 'Oh yes, sorry I am so caught up with my wound I completely forgot about that. I can spare 1 firewood so you would get 2, do you think you could spare another water in exchange for the wood?' 'i cant unfortunately i really need the two water im sorry. '
Utterance: 'im so sorrry unfortunately i am in dire need of two wood we are in a very cold climate'
Example Output: Yes

Example Input: Context: 'Well I am going to have to think about this deal. Perhaps I can contact my friend and see if he can get some extra water. He is a big eater so the food may come in handy. ' 'That would make things better for me.  ' 'Can I ask you why you need so much water for one person? '
Utterance: 'Hiking in the summer, I sweat a lot and I don't want to risk getting dehydrating and sick out in the woods.'
Example Output:
Yes