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.

Q: Context: 'I would do 3 firewood, 2 water and 2 food.' 'I can't do that. Truth is I need the firewood and I was hoping you didn't need it. I propose I keep 1 firewood, 3 waters and 2 food and you take the rest?' 'I would do this instead: 3 firewood, 1 water and 2 food.'
Utterance: 'That's not going to be a fair offer, you'll need to do better than that or I don't think we can come to an agreement'

A: Yes
****
Q: Context: 'Hello there...! Are you excited for the camp' 'Hey, I am really excited! 🙂'
Utterance: 'Wow.. Cool '

A: No
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Q: Context: '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.' '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'
Utterance: 'yes which is why you have two firewood. I think it is fair for me to get at least one. If food is so important to you then I'll give you two food. but we would be in the dark'

A:
Yes
****