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.
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Question: Context: 'Good morning' 'Hi, how goes it?' 'It's going alright. What do you need the most to trade?'
Utterance: 'well, I run and could use some extra water. How about you?'

Answer: No


Question: Context: 'yes friend. i going to trip with my team.in my team old age sicked people and kid are there so i need some favor in extra package' 'Well i am also going on a trip, in a very cold climate, unfortunately i have a medical condition where i need to stay hydrated and warm or i can have siezures' 'i understand friend. i need 2 pack of water and 3 pack of food and 2 pack of fire wood. can you please help me '
Utterance: 'No way can you have everything, I will need 3 packs of firewood 2 backs of water then you can have all the food'

Answer: Yes


Question: Context: 'hi! i would love to take my kids camping to teach them about the outdoors, to do this how about i take all of the food and 2 of the waters, you can have the rest '
Utterance: 'Hello there.  That deal most definitely will not work for me. '

Answer:
Yes