Part 1. 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.
Part 2. Example
Context: 
Utterance: 'how about I give you 2 waters and 1 food package in exchange for all your firewood?'
Answer: No
Explanation: The utterance does not use the no-need strategy since it never refers to an item that the participant does not need.
Part 3. Exercise
Context: 'hello' 'Hey! How are you? My bestie and I were going to be going on a camping trip, but my other friends heard about it and wanted to come along so we're going to need more supplies than I initially though which has got me a little worried. ☹️'
Utterance: 'Yes!!! I need some water pretty bad.  I am good on food because I fish and I have been able to catch some catfish from the lake.  How about I take 2 water 2 firewood and 1 food'
Answer:
Yes