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.

Input: Consider Input: Context: 'Hello, are there any of the three items that you want to be sure you have enough of? 🙂' 'I want to be sure that I have enough firewood. I want to relax, sit around the campfire, and roast hot dogs and marshmallows. What about you?' 'That sounds great! I like all three items, but I definitely want to make sure I have enough water, especially to drink and stay hydrated and full of as much energy as possible. I require a lot of liquid as a 6-foot-4, 260-pound guy!'
Utterance: 'I don't think the weather is going to be that hot, and I don't plan on doing any hiking. So, I should need much extra water.'

Output: Yes

Input: Consider Input: Context: 'What do you propose?' 'I really need food too, but I am willing to deal and let my kids go hungry I guess ☹️ I propose I get one food, 3 firewood and 1 water. ' 'Will you please give me one firewood? I may run out of what i have. Just one.'
Utterance: 'I think I will need all the firewood since you are taking 2 foods. I will need to hunt and cook food from the land meaning I need my fire going all the time.'

Output: Yes

Input: Consider Input: Context: 'Since you will get all the fire would do you think I could have 2 foods and 2 waters. You would get 1 food, 1 water, and 3 firewood. 🙂 You seem like you are a great outdoor person that I would think you would be able to catch some fish to cook with the firewood. 🙂' 'No that does work well for me. If I only have 1 food I need 2 waters and the firewood to make up for the loss of food.' 'What about I have all the food, and you can have everything else? I would think that seems pretty fair.'
Utterance: 'Sorry, I understand where you are coming from but I really need at least one food. '
Output: Yes