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: 'You drive a hard bargain. I could really use that firewood. It's going to get cold tonight and these sleeping bags are not worth the price I paid ;)' 'Haha, I know but I am in the same situation! ☹️ and since I am getting less food I feel like it is fair I get on more firewood since I truly need that 🙂' 'Some extra water for coffee might keep us warm, would you consider taking 1 food, 2 wood, 1 water?'
Utterance: 'Sure I can do that 🙂'
Example Output: No

Example Input: Context: 'hello there my fellow camping friend'
Utterance: 'Hi! I'm most interested in acquiring firewood, since I don't want my fire to burn out on the trip. What are you looking for?'
Example Output: Yes

Example Input: Context: 'ok I will just be able to get by with 2 of the food, I can give you all 3 of the water if I can take 2 of the wood. I have panic attacks in the dark.' 'Okay that works for me as well.' 'awesome any chance I could persuade you to substitute your 1 food item for an additional fire wood 🙂'
Utterance: 'No I cannot do that unfortunately. We brought just enough food for our weekend trip, and I cannot lose any or we will run out before our camping trip is over.'
Example Output:
Yes