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: 'Yeah me too, so apparently there are some extra supplies up for grabs we need to divvy up between us.  Do you have any thoughts on how we should do that?' 'I was thinking we can say which ones we want more? Or depending on where we are camping and our camping abilities, we might need some materials more over others' 'That sounds good to me!  I heard where we are going it is going to be really cold the next couple of nights so we definitely need extra firewood.  We also have a pretty big group so extra food and water would come in handy too.  So how about I take 2 of the extra firewood, 1 extra water and 2 extra food?'
Utterance: 'Oh we have a substantial group as well, one of which is newly pregnant. Since we could find firewood ourselves, how about you take 2 firewood, 1 water, 1 food? '

SOLUTION: Yes

PROBLEM: Context: 'Hi, I would like two firewoods and two food. You can take everything else. Does that work for you?' 'That might work. What reasons do you have for needing those?' 'I want to make smores and a nice dinner'
Utterance: 'I feel like I might need more firewood, I'm staying in the desert and it gets cold at night.'

SOLUTION: No

PROBLEM: Context: 'I was actually saying you get 2 firewood and I get 3 waters. Then you could have 2 food and I get 1 food.' 'That's seems fair to me since we all need food to eat' 'Okay, I'm glad we were able to work something out!'
Utterance: 'Am also glad.You are more interested in water. Do you drink a lot of water frequently?'

SOLUTION:
No