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: 'Hey there!' 'Hi! What are your preferences? ' 'Food is of the highest preference for me! I am a diabetic and always need to be able to eat if I'm experiencing a low! How about you?'
Utterance: 'Food is also my highest preference, followed by firewood, with water being the lowest. I don't have a medical condition that needs food so I can give you 2 units if I can have 1?'

SOLUTION: Yes

PROBLEM: Context: 'yes. I will definitely give you. I bring extra woods.' 'Great! Can I take 2 and you can have 1?? I am willing to give you 2 of the water then!' 'Its pleasure to me. Will you give food extra 1 to me?'
Utterance: 'I suppose I could do that. I am worried a disease has possibly spread to the area due to the very wet weather, but I can sure fish for most of my food then!'

SOLUTION: Yes

PROBLEM: Context: 'I do need a little firewood to cook the fish. However, it's so hot outside that I may get dehydrated. ' 'Ah, so you want some extra water too? I have a lot of lemonade mix for the kids so I'll need water for them.' 'I tend to get dehydrated quickly so if I don't have enough to drink I won't be able to provide everyone with food.'
Utterance: 'Well, we have extra food too. How about I take 2 water, 1 food, and give the res (1 water, 2 food, 3 firewood) to you?'

SOLUTION:
Yes