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: 'Hi there! Hope your day is going well 🙂'
Utterance: 'Doing great!  How about yourself?'

A: No
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Q: Context: 'Haha I suck at those activities as well. I don't usually don't eat a lot, so I'm happy to exchange some food supplies for water supplies. ' 'I would be willing to do that. What do you propose?' 'I get 2 water, 1 food and 1 firewood, you get 1 water, 2 food and 2 firewood. '
Utterance: 'You know what that sounds extremely fair. I would accept that offer'

A: Yes
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Q: Context: 'Yeah, that is fine with me.' 'In that case, I would be fine trading the extra food for a water. so you would get 2 waters and 2 foods ' 'Hmm, that works for me. So basically, you get 1 food, 1 water, and 2 firewood? I get 2, 2, and 0. If that's right, I agree.'
Utterance: 'Yea, so that about right, but i get 3 firewoods'

A:
No
****