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: 
Utterance: 'Hi there. How are you?'
Example Output: No

Example Input: Context: 'I'm a big fan of well seasoned food and mushrooms! Mmm.. 🙂 Do you think it would also be alright for me to have 2 of the 3 waters since I will be hiking a lot?' 'That would be fine.  I was hoping to have 2 but since I am only walking and you are doing more heavy duty hiking, you take them.  Agreed?' 'I really appreciate that. Do you think you will be okay with just 1 water since you have health issues?'
Utterance: 'That would be very nice, but I worry about you not having enough on the trail.  Dehydration would not be good.  I am pretty sure I can ration my supply to make it last.  🙂'
Example Output: Yes

Example Input: Context: 'Hello, I want to keep 3 packages of the water and 2 packages of the food and 1 package of the fire wood , and you can keep 1 package of the food and 2 packages of the firewood.'
Utterance: 'Could I get 1 package of the water just to be entirely safe?? I really appreciate the 2 packages of firewood as it has been very wet and rainy where I will be going.  There will be a lot of standing water, so my chances for having safe water to drink might be a little iffy.'
Example Output:
No