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 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.
PROBLEM: Context: 'Hello, I would like to take all of the firewood and two of the water packages. You can take all of the food and the other water package. ' 'I am not a fan of that deal' 'That's alright. Do you have anything you need in particular? '
Utterance: 'I need food and water'

SOLUTION: No

PROBLEM: Context: 'Oh that' 'We will need some extra water for all the girls on the hike.' '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.'
Utterance: 'We can get by with less food since the girls will be looking to forage in the forest to get a badge.'

SOLUTION: Yes

PROBLEM: Context: 'Okay. I'm not especially worried about food. What's your lowest priority?' 'I have enough food too. Can I take 2 water, 1 firewood and 2 food?' 'How about two water, 1 firewood and 1 food, since we both value water the most?'
Utterance: 'Is that what you want or what you are offering?'

SOLUTION:
No