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: 'That sounds good to me. What about the food?' 'I would like 2 food, but you may have one. I wouldn't want you to be too hungry!' 'I don't want to be too hungry either but I think perhaps I might need an extra water to compensate for the lack of food.'
Utterance: 'Since I am giving you all of the firewood that you said was most important to you, I feel I should get at least the same amount of items as you, especially since you are getting exactly the firewood you want. I will need to stick to three waters and two food.'
[EX A]: Yes

[EX Q]: Context: 'Hello, I was hoping we can chat. ' 'Hi there. ' 'So why did you decide to come camping?🙂'
Utterance: 'I think it will be fun. I was wondering what your preferences are for the extra items we can bring?'
[EX A]: No

[EX Q]: Context: 'You are welcome! 🙂 I am happy that we reached an agreement! Did you happen to see any dry looking trees on along your way?' 'I am also happy we reached an agreement so easily! You are a great partner for compromising! Honestly, I am not sure how to tell if the trees look dry but I would definitely help you go look for some. I will submit our original deal so we can get on with camping🙂🙂' 'Thank you! Stay safe out there! If you need anything else, let me know.'
Utterance: 'You as well! Have fun!'
[EX A]:
No