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 self-need strategy, otherwise output No. self-need is a selfish negotiation strategy. It is used to create a personal need for an item in the negotiation, such as by pointing out that the participant sweats a lot to show preference towards water packages.

Ex Input:
Context: 
Utterance: 'Hi there! Curious as to what's on your mind regarding each item. I have my own preferences, but will share after you.'

Ex Output:
No


Ex Input:
Context: 'I need extra food. I have recently  been ill and my doctor has prescribed extra calories so I can regain my strength.' 'I’m sorry to hear that! If there are 3 packages of food please take 2 of them. I could stand to eat less!' 'Thank you. That deal is perfect!🙂'
Utterance: 'Sounds good to me. Let me see how to execute this trade!'

Ex Output:
No


Ex Input:
Context: 
Utterance: 'Hi!  The weather is going to be a lot colder than I anticipated, so I need extra firewood.  Would you be willing to give some to me?'

Ex Output:

Yes