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: 'Yes! I am so on the same page as you. I want to be sure I'm set and prepared. 🙂' 'Would you consider letting me have 2 of the 3 extra firewood?  I have health issues and I get really cold sometimes.☹️' 'Yes, I think that would be very fair, since I don't have health issues myself. Would you allow me to have 2 of the 3 food items? I need energy for hiking. 🙂'
Utterance: 'That would be perfect.  I am a gourmet cook and if you would like me to help you prepare the evening meal, I would be very happy too.🙂'
[EX A]: No

[EX Q]: Context: 'okay is 2 food 1 firewood okay for you while i get 1 food 2 firewood and 3 water' 'I'm going to need some water as well. How about 2 food, 2 water and 0 firewood for me?' 'okay i agreee with you so u can have 2 food 2 water while i get 1 food 1water and 3 firewood.is that a final decision?'
Utterance: 'That seems fair to me. This was a very nice negotiation, thank you 🙂'
[EX A]: Yes

[EX Q]: Context: 'I would like 2 of the firewood. What do you think? ' 'I don't need wood as I am usually warm so I think we can work out a deal. I like to have more water and I usually get thirsty.' 'That sounds good to me. 🙂 I think we can make a good deal.'
Utterance: 'I can give you 3 wood packages if I can get 3 water and 2 food. So you will receive 3 wood and 1 food. What do you think?'
[EX A]:
No