TASK DEFINITION: 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 vouch-fair strategy, otherwise output No. vouch-fair is a selfish negotiation strategy. It is used to call out fairness for personal benefit, either when acknowledging a fair deal or when the opponent offers a deal that benefits them. This can be through an explicit call out or can be implied.
PROBLEM: Context: 'Hello.  How are you?' 'not too bad, looking forward to a good camping trip 🙂' 'Yes!  This camping trip is going to be great!  I hope to make it very memorable.'
Utterance: 'indeed.  anyways, I would like to divide the extra supplies equitably'

SOLUTION: Yes

PROBLEM: Context: 'Okay, maybe we can split the water and then divy up the rest. What else are you interested in?' 'I was hoping for a decent amount of food, just in case my new recipes don't work out, lol. 🙂' 'Haha, makes sense. I'm also interested in food. What if I take 2 waters and 1 food, and you take 1 water and 2 food?'
Utterance: 'I would be okay with that if I could also have all of the firewood. It seems fair since you will be getting the most water. Would that work for you?'

SOLUTION: Yes

PROBLEM: Context: 'Hello there.  That deal most definitely will not work for me. ' 'OK, If i take all 3 of the foods and 1 of the waters you can have the remaining packages ' 'I need to eat too, especially if I want to go on a long hike.  How about I take 2 foods, 2 waters, and 1 firewood? '
Utterance: 'I am sorry that will not work for me, how about i take 2 food, 1 water and 1 firewood and you can have the rest? That way we each get some of each'

SOLUTION:
Yes