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: 'That is really nice of you! I hope they have fun! My family had this trip planned for quite awhile. We have an extra person with us because my son begged me for his friend to come. I couldn't say no. 🙂' 'I have definitely been there before! With taking all the kids I'm worried about them getting dehydrated. I also have a 7 month old that needs water to make her bottles! I was hoping to get 3 extra packaged of water for sure. ' 'That is one of my fears as well. Does you seven month old breast feed? I am hoping for the water as well. I would love to give them to you if I had extra. Is there anything else you need?'
Utterance: 'No they don't ☹️ She is starting to eat a few solid food items. So if I had some extra food that would help. I think if I had 2 waters, 2 food, and 1 firewood to be able to cook and keep things clean I would have enough. '

Output: Yes

Input: Consider Input: Context: 'so I would have 2 water, 2 food and 1 firewood? My kids were looking forward to making s'mores. If I could get 2 water, 2 firewood and one food, that would be great!' 'You would get 2 water and 2 food, I would get 1 water and 1 food for hiking and 3 firewood for having to stay out longer in the dark to complete my hiking goals.' 'doesn't really seem fair for you to get all the firewood. I would like to have at least one because then we're completely in the dark.'
Utterance: 'You get lots of water and food for your children, I am cutting back on my goals by giving up energy which means I have spend more time outside hiking. I do need to stay warm'

Output: Yes

Input: Consider Input: Context: 'I'm good. Just preparing to go on a camping trip' 'Same with me, good time of year' 'Yeah I'm hoping to relax with my family and enjoy the outdoors '
Utterance: 'Same, i do ask though as i have a medical condition if i can have all the water, it is really hard for me to stay hydrated'
Output: Yes