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.

Example Input: Context: 'hello. so what are you thinking about this whole situation?' 'Hey, I think that this is nice, we get to go camping and get extra stuff. But definitely need more food and firewood'
Utterance: 'Yeah, I think I'm okay with firewood, but I'd really like more food and water.'
Example Output: No

Example Input: Context: 'Hello.  I am very interested in the firewood and would be very willing to forfeit all the water.' 'oh really.  i am willing to make a negotiation with you on that for sure.  where are you plannign to camp?' 'I'm camping near a natural spring and will have all the water I need.  How are you planning to eat?'
Utterance: 'i have some spare cans but i am not too worried about it.  its a low prioirty for me '
Example Output: Yes

Example Input: Context: 'Why would you want to give up all that water? You're going to need extra water for your family to drink. All the sodium in the fish is going to make you all thirsty!' 'Your right,😮  I didn't think about that. But will probably only need 1 extra package of water so, in exchange I will offer you 1 package of firewood.' 'I know this isn't your problem, but I'm a student and I had to come up here to take photos of the night sky for my astronomy class. I slept really late today as I have to sit up all night to get the different stars, and possibly even the space station if it's clear enough out. I have to sit by a fire to stay warm so I can get these pictures to hand in to my professor tomorrow.'
Utterance: 'You know that is very impressive.  I admire your determination and effort you put into your class.  You must be very passionate about astronomy.'
Example Output:
No