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: 'Food is the item of greatest value to you?' 'It is! What do you think?' 'The item of greatest value to me is WATER. Before thinking about an offer I need to know what your priorities are and you need to know mine in order to conclude something fair for both of you.'
Utterance: 'My priority is FOOD. How about I get 3 food and you get 3 water?'

SOLUTION: No

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

PROBLEM: Context: 'Hi, I brought some water with me. How much do you need? '
Utterance: 'I want 2 liters of water'

SOLUTION:
No

