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: 'Happy birthday to your dad!! You can have all of the food if I can have all of the water. 🙂' 'That' 'Will that work for you? If so, we can talk about the firewood. 🙂'
Utterance: 'Sorry, submitted too early! That sounds good to me! If I can have all the food, you can take 2 of the firewood and I'll take one. Plus you take all of the water.'
Example Output: No

Example Input: Context: 'I think we can defintiely work together and come up with a great solution and both get what we need' 'do you have a particular item preference?' 'I do. I have been looking everything over and feel this won't be to hard to come to an agreement'
Utterance: 'Well my camp places a premium on water. How would you feel about for me: 2 water, 1 food, 1 firewood?'
Example Output: Yes

Example Input: Context: 'Well, I'll start with a trial offer and we'll go from there' 'Ok, offer away!' 'Well, food is high on my to do list only because I have a big family and we all know how they eat..... Wood well, I can find that along the way if necessary, and same as water so both of those are fairly low on my list... you?'
Utterance: 'Water is definitely a priority, we're heading out to the desert and there's little water sources out there. While I could use some food, I'd be willing to give you food in exchange for water. We could split the firewood among us?'
Example Output:
Yes