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: 'hi, i am doing well' 'cool, the family is looking forward to the camping trip this weekend' 'same, I will need 3 food as I need food to survive, in return, you can have all the water'
Utterance: 'My kids are really eager to make s'mores and tell stories by the campfire. They do need some food though. But i am willing to give you the 3 food for 3 firewood and 2 water if that works for you?'
Example Output: No

Example Input: Context: 'Hello hope you are excited for the trip Im hoping we can discuss the supplies. I would like to get 2 water 1 food and 2 of the firewood ' 'I can give you 2 waters and 1 food, but I really need more firewood. I ran out last time and I don't want to go through that again! How about you take 2 waters, 1 food, and 1 firewood? '
Utterance: 'I feel like we are almost there I hunt so im ok with the one food; why would  I only get one firewood?'
Example Output: Yes

Example Input: Context: 'We are going to be in an area where there is little potable water.  I don't have a water filter either.  The extra water will be very important for our group.  ' 'I understand. We will have a big group (about 10 people) so we are trying to have as much water as possible as well. If anyone gets dehydrated it'd be the end of the trip and hard to get everyone back to base. What's the fewest amount of bottles you're willing to accept?' '😮Two packages is the lowest I would accept.  There is one exception to that.  If you were willing to give up 2 firewood, then I would be willing to take 1 water.  I think I could trade some extra firewood for water at the campsite.'
Utterance: 'I understand. I am not willing to give up any firewood, but I'd be willing to do a trade of 1 food for 1 water. So 3 firewood for us, 1 water for us, and 1 food for us.  '
Example Output:
No