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 Input:
Context: 'Would they be okay with 2 food?  Otherwise can give you an extra and I can take either an additional water or firewood 🙂' 'I have a great offer.  How about I take 2 food, 2 firewood and 1 water and you will get the extra water your camp needs!!' 'We place a premium on the water.  That's the same amount of water, do you mean we take 3?'
Utterance: 'I do need some extra water.  So I will need to take 1, but our preference is food and we would need firewood to cook it on.  if you're OK with this, I will submit it.  Its a great deal I think and we'll both get what we need'

Ex Output:
Yes


Ex Input:
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'

Ex Output:
Yes


Ex Input:
Context: 'If I do that I would also like all three firewood' 'Why do you need all 3 firewoods?' 'I get cold pretty easily. Extra firewood would help me stay warm. And if I give up all food, I'll need another way to keep my body warm.'
Utterance: 'okay how about if i only get 2 food packages and i give you 2 firewood. So we both gets something to help us/ Because i to at least 1 firewood'

Ex Output:

Yes