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: 'Hello! ' 'Hello there! How are you?'
Utterance: 'I'm doing well! Just want to have some open communication on the packages for our camping trip! I'm very excited for it!'
[A]: No


[Q]: Context: 'Hello, are you excited for your camping trip?' 'hii'
Utterance: 'Do you have an idea of how you'd like to split up the extra supplies?'
[A]: Yes


[Q]: Context: 'Thank you.  WOuld you be willing to give me all the food?  I would give you all the water and 2 firewood.' 'I can give you all the food and 1 water. I get all firewood and 2 water.' 'I need at least one firewood to cook my food.  Can you give me one firewood for all the water?'
Utterance: 'I'm sorry. I won't be able to do that.'
[A]:
Yes