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: 'Same here. I'll go ahead and list some of what I need and you let me know if you will need the same as well. I need some extra water for our camping trip as well as some additional food. ' 'That sounds reasonable. I don't particularly need the food because I see that as more of a luxury but I could really use some more water. It's supposed to get really really hot on the weekend. 😮' 'I hear that. What do you think of if I take 3 of the food supplies and you can have two waters? '
Utterance: 'That sounds like a fair compromise. I can get food by hunting animals, old school style. That would give you 4 total items. In that case it's only fair if I take all 3 of the firewood. 4 for me and 4 for you sounds like a good deal to me. 🙂'

A: Yes
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Q: Context: 'Well, that's a bummer. How are you set for food? While I wouldn't mind a bit more, I'm in pretty good shape there, so I'd be willing to trade it for water. I'd hate to leave without getting a good hike in.' 'Hun,It's a bit of a fair deal,but due to the condition here i will need a bit more of water though foo cannot be overlooked also for survival but still to survive we take chances.So do you mind me giving you a package of food and u trading 2 pakages of water?.' 'Well, I tell you what, I'd be willing to take 2 packages of water and 2 of firewood and leave the rest to you, including all of the food. How does that sound?🙂'
Utterance: 'ok nice good deal'

A: No
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Q: Context: 'I need firewood to cook the fish I plan to catch.  I don't really need more food, but I can use a little water too, since it's warm.' 'I need firewood, because I have a medical condition that causes my veins to close if I get too cold at night. I don't mind sharing the water.' 'I could give you 1 firewood, 2 waters, and 1 food. '
Utterance: 'If you make it two food, we have a deal.'

A:
No
****