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: 'Okay . How much You need each?' '3 Food and 1 Firewood? You get the rest?' 'That's fine.I will accept your deal.Tell me the reason why you need the item?'
Utterance: 'Food for the family, and firewood is a good tool to purify water and cook. Also wanted to make a win-win deal'

SOLUTION: Yes

PROBLEM: Context: 'I'm doing pretty good. I plan on camping with the family this weekend, how about you?' 'Nice. Same, it's over 100 degrees where I live. 🙂' 'Yikes! It's a bit colder up here, that's why I would like to bring some extra firewood to stay warm at night.'
Utterance: 'Oh, I see what you did there. No problem I have plenty of firewood for you buddy. 🙂'

SOLUTION: No

PROBLEM: Context: 'Nice, are there any extra supplies that you will really need?' 'At the camping site. Yes, I would like some water and food to refill the used packs' 'I was hoping to get alot of water as well, would you be ok with me getting two waters and three firewoods if you get all the food and one water?'
Utterance: 'Hmm, that's not favorable for me going by the volume of items left in my arsenal. Water is more of a higher priority than food. So, I would exchange 1 pack of food for an additional water'

SOLUTION:
Yes