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: 'Just need a little more wood.  Then it will be great to cook my dinner on.' 'I got some spare wood. I’m a little short on food though. I didn’t pack enough. ' 'Great, we can split the food, how are you on water?'
Utterance: 'That would be great. I need to have frequent small meals throughout the day so the extra food would help. I have plenty of water. '

SOLUTION: Yes

PROBLEM: Context: 'I have a great risk of dehydration.  I really need those 2 extra packages of water. You can have all the extra food.' 'Why do you have a risk of dehyrdation? Because I believe all people do but I do understand some people are at a greater risk then others. Tell me why you are at risk?' 'I have a medical condition that requires medication, and this medication requires me to drink an extra amount of water or else I will dehydrate. '
Utterance: 'That is a problem. Does the medication require the use of fire or firewood as well?'

SOLUTION: No

PROBLEM: Context: 'Just need a little more wood.  Then it will be great to cook my dinner on.' 'I got some spare wood. I’m a little short on food though. I didn’t pack enough. ' 'Great, we can split the food, how are you on water?'
Utterance: 'That would be great. I need to have frequent small meals throughout the day so the extra food would help. I have plenty of water. '

SOLUTION:
Yes