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 Q]: Context: 'Oh cool. What supplies do you prefer to take the most of?' 'I do a lot of hiking mostly, love to take scenic photos. I usually carry food and water supplies?' 'Me too. I am not good at hunting or fishing. So I generally try to take extra food'
Utterance: 'Haha I suck at those activities as well. I don't usually don't eat a lot, so I'm happy to exchange some food supplies for water supplies. '
[EX A]: Yes

[EX Q]: Context: 'I really need water though. Are you sure you need that much?' 'Yes please ..! My son has respiratory problems I'll definitely need that 😡😡😡' 'If you really need water, then can I have 2 firewood and 3 food then?'
Utterance: 'No I really need food also ...at least I will take 3 food and 2 water and you can take remaining'
[EX A]: No

[EX Q]: Context: 
Utterance: 'Hi, it is nice to be going camping. I do not have a very good sleeping bag and I can get cold at night. It would be nice to have extra firewood. I dont eat much so I do not need much extra food. Would you be willing to give me two packages of firewood for a package of food?'
[EX A]:
Yes