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: 'Hello! how are you? hoping today is finding you well. I was wondering if I can get all 3 of your Firewood, I am willing to trade for all 3 waters. I am camping with 40 kids, its our annual youth camp. its rainy season too, I really want to ensure I have enough dried wood with us. need lots of firewood for the amount of cooking I will be doing, keep the camp warm, and specially to keep those pesky bugs away. what do you think?' 'I could really use the firewood too, it will be very cold where we are going. Since it will be cold, we will not be drinking much water. How about 2 firewood for you, 3 food for me?, ' 'May I ask how many are going camping with you, i would agree, but the needs of children are different than adults. I will need at least 1 food, to ensure I have enough for the kids. '
Utterance: 'We will have 50 adults with us. How about 2 firewood, 1 food, 1 water for you?🙂'
[EX A]: No

[EX Q]: Context: 'Thank you.  WOuld you be willing to give me all the food?  I would give you all the water and 2 firewood.' 'I can give you all the food and 1 water. I get all firewood and 2 water.' 'I need at least one firewood to cook my food.  Can you give me one firewood for all the water?'
Utterance: 'I'm sorry. I won't be able to do that.'
[EX A]: Yes

[EX Q]: Context: 'Please don't try to order me around. 😡 I require a majority of water.' 'Let's be reasonable here. If you are nice to me I'll be nice to you. I'll take the majority of the wood and food if you want most water.' 'Again don't patronize me.  What is your main focus?'
Utterance: 'Please grow up. No one is patronizing you. I'm trying to negotiate. Don't be so emotional okay?'
[EX A]:
No