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.

Context: 
Utterance: 'Can you spare some water? I need to take medication and I have run out.'
No

Context: 'Hi, what is your highest priority item?' 'I would love to have extra food for my trip, bringing the family! how about you?'
Utterance: 'I agree, it will be tricky to find extra food while camping. I'm sure we can figure out something that works for both of us... the water is also very important to me because it's supposed to be hot. There is plenty of wood where I'm going, so you can have the firewood. Would you be willing to take 3 firewood, 1 food and 1 food?'
Yes

Context: 'Okay, it seems we both have the same priorities in food most and firewood second most. How about this, you take 2 packages of food, I will take 1. You give me 2 packages of firewood I will give you 1. We will then divide the water. Is that fair?' 'That sounds really fair! 🙂' 'Would you be willing to give me 2 water and you take 1?'
Utterance: 'I'll agree to that!'

No