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 also need water because we plan to do a lot of hiking. What about you?' 'Wow, I think we planned the same activities for our trip. I need water too 🙂' 'Haha well we'll be seeing a lot of each other then. Is water your number one or two priority?'
Utterance: 'Water is my second priority item. I am sure we can work out a fair deal. What do you propose?'
[EX A]: Yes

[EX Q]: Context: 'That's what I'm offering to you, but I think it's a fair deal, so I'd accept it myself, too.' 'Fair enough.' 'If that sounds good, just tell me which bundle you want.'
Utterance: 'As you suggested, I will take 2 water 1 food and 1 firewood'
[EX A]: No

[EX Q]: Context: 'i think its fair, do you, i think anything extra at this point in time is better than having nothing' 'look  mate, let me have 3 on food and 2 on firewood, you can have the water and i on firewood' 'why would you not just take 2 packs of each whiile i onlt keep 1?'
Utterance: 'Alright fair enough, let me have 3 on food, 1 on firewood and 1 on water. This trip means alot to me'
[EX A]:
Yes