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: ':) Yes and you know what we are experiencing some difficulty as some people who said initially they were not going to be able to come and at the last minute are saying that they are coming so we are short on the most important items which are food and was wondering if we could speak about sharing items but due to the people who joined late if I can get food and water you can have more wood as none of us know how to really go into the wild and we do not want to turn away our last minute guests, it would be of tremendous help   ' 'I'm more than willing to help you to the best of my ability. I understand and appreciate the difficult situation you find yourself in. How many packages of food and water do you think you will need for your additional guests? How much wood do you need since you are saying you don't need much?' 'Thanks for your understanding well I think if possible then to meet the situation then how bout 3 food and 2 water then you get all the wood ? That way you can have awesome campfires lasting through the night, we will be going to sleep extra early to wake up very early so we do not need all that wood, as much as we need food to replenish our energy and be ready for another day of long walks to see as much as we can from nature 🙂'
Utterance: 'I agree with you that campfires are awesome and I do find them to be be quite useful. I'm not as early of a riser as you are unfortunately! 🙂 I'm willing to accept your offer on food as long as you could please consider my needs for water. I am a very active hiker. While I don't need much food for my hikes I do require a lot of water. I once went on a hiking trip when I was new to the activity and ran out of water. I got lost and almost dehydrated! Ever since then it's been very important to me to have as much water as possible. What would it take in order for me to get as much water as possible keeping in mind that I'm willing to give you 3 food. '

SOLUTION: Yes

PROBLEM: Context: 'Welcome to the camping trip Dude!' 'Welcome! I'm really concerned about our water supply, we are desperately low. We don't have much food, a few protein bars. how are things looking your way?' 'I haven't got too the site yet but I am almost there.  I can't wait to finally relax!  I have been going nonstop for days.  Good idea to check supplies!'
Utterance: 'We're nearly there and just realized that we must have missed picking up some of our stuff before leaving.'

SOLUTION: No

PROBLEM: Context: 'Yes pretty much that sounds like we can work something out' 'Would you be willing to let me have all the firewood and you could take 2 of the food and 2 of the water?' 'No I can't do that unfortunately./'
Utterance: 'Ok, so I could take 2 firewood, 1 food, and 1 water, the original deal, do you still want to do that one?'

SOLUTION:
No