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 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? ☹️'
[EX A]: No

[EX Q]: Context: 'no i think i need 2 waters' 'That will be very difficult for me. I have a condition that requires water all the time.' 'Same thing here. Also i only need 1 food so can i get 2 waters'
Utterance: 'Let me see the best offer for us then. I hope you will be okay.'
[EX A]: Yes

[EX Q]: Context: 'Lets strike balance like 1/2 2/1 3/0' 'sorry i'm not understand can you explain please?' 'I take 1 firewood, 2 water and 3 food.'
Utterance: 'no i need 2 pack of firewood, and 1 pack of food and 1 pack of water '
[EX A]:
No