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: '🙂 Ok.' 'I can give you 1 thing of water and 2 things of firewood' 'Hmmm. So you will end up with 1 firewood, 3 food, and 2 water?  I think I need 1 more water and 1 more food. '
Utterance: 'I'll give you another water and food'

A: No
****
Q: Context: 'I would like 2 firewood, and I don't care about anything else. I would give you 2 water and 3 food' 'I will give you 1 firewood for 3 waters and 3 foods. ' 'Nah I'll pass'
Utterance: 'Do you have another deal to offer? ☹️'

A: No
****
Q: Context: 'I do need more food than firewood, If I could get 3 food and 2 firewood. You can get 3 water and 1 firewood.' 'I do need some food. I would like to get at least 1 food. You can still get 3 firewood.' 'I could use water as well, so I could get 1 water, 2 food and 2 firewood'
Utterance: 'I am good at making fire and have a starter so I can give up all the wood.'

A:
No
****