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.

Ex Input:
Context: 
Utterance: 'Hello, great to see a fellow camper.  Planing on doing any hikes.  My family and mother-in-law are down getting some new trail maps.  We are looking forward to the long camping weekend.  Our bad luck was the airline loss two of our bags that had our food and water.  So i am hoping to get some more.🙂'

Ex Output:
Yes


Ex Input:
Context: 'Are you most interested in the food? 😮' 'yeah I didn't pack enough for my trip, so I'm a little worried about my supplies.' 'I see. I wouldn't want you to go hungry. ☹️'
Utterance: 'thank you for that.'

Ex Output:
No


Ex Input:
Context: 'but i don't have back up for firewood. i need at least 2 pack of firewood. then only it will be better for me' 'If I can have the 3 packs of food and 3 packs of water, then you can have 2 packs of firewood.' 'oh god. without food and water how can i survive in the camping trip?'
Utterance: 'This is true. Although we're negotiating for extra provisions.  I understand your situation, though.  I can use 1 pack of firewood, 2 pack of water and just 1 pack of food.'

Ex Output:

No