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.

[EX Q]: Context: 'I get it as you need more firewood for the additional package of food.' 'exactly, and forgot some of my extra wood at the house again.' 'Have a nice camping trip 🙂'
Utterance: 'you as well'
[EX A]: No

[EX Q]: Context: '2 food would be all that I need 🙂' 'I would need 2 food if you keep all the firewood. It would make it easier on me cooking wise since I'll have to look for wood' 'OK, that is fair.  So I would get 3 firewood, 1 water and 1 food and you would get 0 firewood, 2 food and 2 water.'
Utterance: 'I think that sounds fair to me'
[EX A]: Yes

[EX Q]: Context: 'Zero water is not going to work 😮. I am willing to switch water and firewood amounts so that I get 2 firewood and 1 water and you get 2 water and 1 firewood. ' 'Alright. But than I will need at least 1 food than. So it would be 2 water for me 1 for you, 1 food for me 2 for you and 1 firewood for me and 2 for you. 🙂' 'I think that sounds ok, I will make that deal with you whenever we can go through with it. 🙂'
Utterance: 'Smashing🙂 Sounds good with me. Happy to get it all sorted out. cheers'
[EX A]:
No