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.
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Question: Context: 'Thank you, 2 packages of firewood would work.' 'So could I get 2 food, if you get 1 food?' 'How many persons are you feeding? I am feeding 2 adults and 2 children.'
Utterance: '2 adults and 3 children, so if I get 2 food and 1 water, you could get 1 food and 2 water? '

Answer: No

Question: Context: 'You can have all the water if I can have all the extra food' 'OK, but first tell me why you need extra food' 'I have 10 people in my group'
Utterance: 'I see. I need more water because I came across some people who were lost and they are very dehydrated.'

Answer: No

Question: Context: 'not too bad, looking forward to a good camping trip 🙂' 'Yes! This camping trip is going to be great! I hope to make it very memorable.' 'indeed. anyways, I would like to divide the extra supplies equitably'
Utterance: 'I think we can defintiely work together and come up with a great solution and both get what we need'

Answer:
Yes