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: 'Wow, 3 weeks is a long camping trip! I don't know if I have enough supplies to go for a trip that long. Are you doing a cabin-style or really roughing it? My husband and son want to do a lot of hiking so we're thinking of moving camp daily.' 'that's awesome! I know, I'm a little worried about my food supplies but I think I can figure everything else out. No, we're roughing it, my boyfriend's huge on camping.' 'Lol, at least it sounds like you've got an expert with you. My husband is really gung-ho but he tends to fly by the edge of his seat when it comes to stuff like planning. He's says he wants to travel light and that he got these water filter straws so that we could drink lake water but I'm super sketched out... I don't want us getting something like schistosomiasis. And I want to make sure everyone stays hydrated with all of the hiking they want to do'
Utterance: 'I get that. I'm going to risk it with the lake water because I'd personally love to have enough food to last 3 weeks (which I'm a little worried about as it is), so I can definitely help you out with the water.'
[EX A]: Yes

[EX Q]: Context: 'What are your preferences?  I always love having a big fire at night when I am camping and I do think water is more important than food.'
Utterance: 'I like to have a lot of food to keep my energy up, but I might need some firewood to cook that food. I can't wait for my camping trip.🙂'
[EX A]: No

[EX Q]: Context: 'I want all the water and all the food. What do you want?' 'I would like all food and 1 water' 'You can have all the water if I can have all the food.'
Utterance: 'how about 2 food for me, 2 water for you?'
[EX A]:
No