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.

Example Input: Context: 'We can do the 3 for 3 trade. That works perfectly! Its' going to be cold at night where I'm going. What's it like where you're heading?' 'It's going to be pretty warm where I'm going, but it's also variable. How do you feel about you get 2 wood and I get 1?' 'That's mighty kind of you. We have a deal! I'll take the 2 wood and you get 1. Thank you. You'll also get the 3 packages of food and I'll get the 3 waters. Deal ?'
Utterance: 'Deal!'
Example Output: No

Example Input: Context: 'Thanks. Yea they do love their snacks LOL. Yea I just need 1 extra food. Snice I wasn't planning on her friend coming. ' 'Okay, then the deal you mentioned earlier sounds good to me. You're okay with me getting 3 water 2 food and you getting 3 firewood and 1 food?' '🙂 Yep sounds like it will help us out the best snice you need water and food for your hike and I need firewood and just 1 food here at the camp.'
Utterance: 'Okay, then that sounds like a good deal for us both! It was a pleasure doing business with you, thanks!🙂'
Example Output: No

Example Input: Context: 'Hi there. I'm hoping we can make a deal about me getting firewood. I get really cold at night and I'd love to have my fire still going in the morning for coffee - I'd gladly share some if you pop by my campsite.'
Utterance: 'I am in dire need of firewood myself. I was planning on bringing food that needed to be cooked over flame. 😮'
Example Output:
Yes