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: '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?' 'Water is my second priority item. I am sure we can work out a fair deal. What do you propose?'
Utterance: 'We'll be able to make it close to equal. Let's do 2 foods for one of us, 2 waters and 2 firewood for the other person. I'll take either.'
[A]: Yes


[Q]: Context: 'Sure you can give me firewood in place of water' 'Thank you 🙂 That works for me. I'm also in my first trimester so I'll need a bit of extra food since I'm feeding my little one. Is that alright with you?' 'Woah... You can take more food as well'
Utterance: 'Thank you dear! :D I really appreciate that. Are you okay with how everything is divided up then?'
[A]: Yes


[Q]: Context: 'Hello. How are you today? 🙂' 'Pretty good!  I am looking forward to going on this camping trip with my family.' 'Same here! We had a couple bumps in the road though, as our freezer stopped working so all our food went bad ☹️'
Utterance: 'That is rough ☹️  We should try to split the resources equitably then'
[A]:
Yes