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.

Q: Context: 'I should be fine, thank you. 🙂 It will be a little bit of work hauling all of my gear and supplies but after I set up camp, it will be smooth sailing. ' 'I'm thinking that we will be able to work out that deal. I do have the water and that's my main thing I needed.' 'That's great, I'm glad we came to an agreement. '
Utterance: 'Everything looks good. I'm glad we both got what we wanted.'

A: No
****
Q: Context: 'Hello. I hope you are well. I would like to have all of the water, 2 of the firewood and 1 of the food. ' 'Hello. I'm actually not doing too well. There have been a few problems and I will need some of the extra packages. I'll need two of the waters, 2 of the firewood and 2 of the food.'
Utterance: 'I'm sorry to hear that you are not doing well. I've also have some issues. On the way up to the camp site, all of my clean water spilled in the car. I was really hoping to be able to get all of the available water. Why aren't you well? I hope it's not serious. ☹️'

A: Yes
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Q: Context: 'I am flexible, but I would prefer some food and firewood. I have a large family to feed and all of my food needs to be cooked.' 'I also would prefer some food but am willing to give 3 fire wood in exchange for 3 water. I suffer from chronic dehydration because I sweat too much.' 'Excellent, I would love to help you out. We have plenty of water to spare. I'd gladly give you 3 water in exchange for 3 firewood.'
Utterance: 'Cool! To show my gratitude, i will give you the extra food. I will have 1 and you will have 2. Is that a good deal?'

A:
No
****