TASK DEFINITION: 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.
PROBLEM: Context: 'Okay . How much You need each?' '3 Food and 1 Firewood? You get the rest?' 'That's fine.I will accept your deal.Tell me the reason why you need the item?'
Utterance: 'Food for the family, and firewood is a good tool to purify water and cook. Also wanted to make a win-win deal'

SOLUTION: Yes

PROBLEM: Context: 'Well that's interesting because I don't even know what is is.' 'We aren't allowed to submit it just yet. So let's chat. What do you value most among the items?' 'Please don't try to order me around. 😡 I require a majority of water.'
Utterance: '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.'

SOLUTION: Yes

PROBLEM: Context: 'Ii understand , the problem  is ctheere is 3 of us. What if  we have 2 food and 2 water and you have 2 firewood ?🙂' 'The object I need the most is WATER, so I cannot give you 2, I am giving you 2 FOOD since it is what you most need. Remember that we must both be satisfied for this to work🙂' '(sorry for the misspellings on above post, my keyboard does that) Ok since that  is your highest priority , I have 2 food 1 water and 2 firewood ? Is that agreeable ?🙂'
Utterance: 'What do you think about this offer, I will give you 2 of FOOD since it is what you need the most, 1 of WATER since it is what I need and 2 of WOOD, I will have less wood but we will both be satisfied.'

SOLUTION:
Yes