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 Input:
Context: 'Hi, I'm hoping we can come to a nice deal. 🙂 I'm most interested in firewood, because it always helps to have extra if your fire goes out.' 'That makes sense. I'm also interested in firewood, but have a great need for water due to the current weather. '
Utterance: 'That makes sense. How about we start out with I get 3 firewood, and you get 3 waters?'

Ex Output:
No

Ex Input:
Context: 'oh it turns out I need firewood too!🙂' 'Ha what a surprise! ;-) What do you need second most?' 'I need food to feed all my friends that are coming up. how about you?'
Utterance: 'Haha yup me too. I have a teenage son who eats about 5000 calories a day. Okay, I think the most fair option is one of takes 2 firewood and 1 of the other two items. I don't care who.'

Ex Output:
Yes

Ex Input:
Context: 'Great! I'll be going to the Catskills, in NY. Where are you planning on going?' 'Antarctica! I am going to need as much firewood as I can get.' 'Ha, woah that's exotic! I'll need some firewood as well, but maybe not as much as you! I'm planning on going hiking a lot, and will need some extra water, as, again, ill be hiking a lot'
Utterance: 'I will offer 3 water to you! You will maybe need more food with that much exercise? How about 2 food? I really need that extra firewood. Remember that the Catskills probably has some extra wood around.'

Ex Output:
No