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.

Input: Consider Input: Context: 'I will get two packages of food and you will receive one. I will get one jug of water and you will receive two. I will get one bundle of firewood and you will receive two.' 'Perfect. It has been a pleasure negotiating!' 'Yes, it has been a pleasure 🙂'
Utterance: '🙂 I hope you enjoy the rest of your day!'

Output: No

Input: Consider Input: Context: 'Hey, I am excited to go camping too! Would you mind sharing your top priority items with me so that we can come up with a fair deal? Ideally I would love 3 firewoods, 3 foods, and 2 waters just like you aha. But perhaps we can each get at least 3 packages of our highest priority item ' 'Hmmm, I think I really need the firewood. I brought softwoods and they burn out quickly so I don't think I'll have enough wood to keep me going through the night. I get kinda scared without the fire. What is your priority?' 'Okay, well firewood is also my top priority since it will be so cold tonight. But I would be willing to take only 1 firewood (and give you 2) as long as I got 2 foods and 2 waters '
Utterance: 'Thank you for the offer on firewood. I think that sounds fair. However, I really would like at least 2 waters as well. '

Output: No

Input: Consider Input: Context: 'Oh I see, its going to be THAT kind of negotiation 🙂 Let's just look at it this way.. I'm with a couple other Floridians so we're not really too worried about firewood as we prefer it cooler, anyway.. and we know the lake is nearby that's stocked with trout for eating if necessary (and of course some fresh water's there, too) - so.. I can tell you that I could go totally without Firewood if I needed to.. I'd rather not, but I could.' 'Do you prefer food or water more?' 'Since the lake is nearby enough, I think we'd be more interested in ensuring there's enough food for my people, I think 🙂'
Utterance: 'Hmm. I really need food too. I don't care much for water either. How about I take all 3 firewood, 2 food, and 1 water?'
Output: Yes