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: 'Hi, how are you? ' 'Am fine what about you?'
Utterance: 'Good thanks! So I'm hoping I can get all of the Food, but am willing to negotiate on the other items. '

Ex Output:
No


Ex Input:
Context: 'Now, let me have 2 food and 2 water and i will give you 3 firewood. What about that?' 'I'm not really worried about the firewood ☹️ What about I take 2 foods, and you can have the 2 waters? ' 'And 3 firewood then, that will be fine with me.'
Utterance: 'Give me 1 firewood, and we'll have a deal? '

Ex Output:
No


Ex Input:
Context: 'I have an extra person camping with us that I didn't expect when I bought food, so I could use one if you're willing 🙂' 'I understand that! I wasn't expecting to stay an extra night, but the weather is too perfect to leave. I can manage with two packages of food for sure. 🙂' 'Great!  Thank you for being so understanding!'
Utterance: 'No problem! So are we in agreement that I get 2 food, 1 water and you get the reverse? I could also probably use one firewood, but it's not as important to me.'

Ex Output:

Yes