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.

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'
Yes

Context: 'I am just going to walk away,  I can't have my family freeze' 'I do not want my family to freeze either but walking away doesn't benefit either of us. How about I take the water and 2 firewoods, you have the rest' 'No deal, I need at least 2 firewood'
Utterance: 'Ok, I can agree to 2 firewood but I will have to take all the food and water to compensate'
Yes

Context: 'I really need the water more than the rest of that stuff. I'll take 2 waters, 1 food, and 1 firewood. ' 'We close the deal if I drink 1 water, 2 meals, and 3 firewood' 'Give me just 1 firewood, and we'll have a deal'
Utterance: 'We have a deal'

No