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 no-need strategy, otherwise output No. no-need is a cooperative negotiation strategy. It is used when a participant points out that they do not need an item based on personal context such as suggesting that they have ample water to spare. no-need can directly benefit the opponent since it implies that the item is up for grabs.

Ex Input:
Context: 'How nice. I am bringing my daughter and her girl scout troop. I am the co leader.' 'Oh that' 'We will need some extra water for all the girls on the hike.'
Utterance: 'Sorry, I sent my last message inadvertently. I meant to say that that sounds great! Yes, I can understand the need for extra water for the hike. With the size of my family, I could use a bit of extra food for our trip.'

Ex Output:
No


Ex Input:
Context: 'Can i kindly know your preferences please?' 'Well, I'm kind of low on water, so I'd like to get as much of that as I can. I'd like to go hiking and I don't really have enough water for a long trip. What about you?' 'Ohh nice.I also have the same issue around here.The thirst for water is growing high than ever due to drought'
Utterance: 'Well, that's a bummer. How are you set for food? While I wouldn't mind a bit more, I'm in pretty good shape there, so I'd be willing to trade it for water. I'd hate to leave without getting a good hike in.'

Ex Output:
Yes


Ex Input:
Context: 'So if we were to split the firewood more in your favor and I were to take all the food, and then we kind of split the water, I think we could maybe make a deal here?  🙂' 'I think that is definitely doable! I'd be glad to make a deal with you. Thanks for being so reasonable! 🙂🙂' 'So I'm proposing 1 firewood to me, 2 to you.  3 food to me.  And 2 water to me, 1 to you.  Can we work with that?  Firewood seems to be important to the both of us so I'm giving up things here.'
Utterance: 'Yes I think that will work just fine. Firewood is important especially because I usually find my food in the woods.'

Ex Output:

Yes


