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.

Ex Input:
Context: 'What do you need it for?' 'I would like some extra food in case I get hungry.' 'Okay that sounds ok, I can do without the food. I also need two packages of water because it will be very hot out.'
Utterance: 'I can give you 2 packages of water.  I think there is plenty of water, so I do not need extra water.🙂'

Ex Output:
Yes


Ex Input:
Context: 'Okay, it seems we both have the same priorities in food most and firewood second most. How about this, you take 2 packages of food, I will take 1. You give me 2 packages of firewood I will give you 1. We will then divide the water. Is that fair?' 'That sounds really fair! 🙂' 'Would you be willing to give me 2 water and you take 1?'
Utterance: 'I'll agree to that!'

Ex Output:
No


Ex Input:
Context: 'I would be most happy to make a concession on the food for an extra ration of water. Are you going to require any firewood if you don't need any I think i'll take the 3 rations so I can have a nice bonfire.' 'I do believe I would need at least one firewood, but am willing to give up 2, so you can have a nice big bonfire 🙂' 'You have been most thoughtful during this negotiation I just want to say thank you for being so helpful.🙂'
Utterance: 'absolutly! You as well. So just to confirm. Me 2 food 1 water, 1 firewood. You, 1 food, 2 water, and 2 firewood? Sound good?'

Ex Output:

No