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.

Context: 'Hi! I'm super excited to camping with my family! We have had to cancel all our original travel plans due to Covid and we're really looking forward to this trip. Especially my son! He's been so restless at home. Are you going camping too?'
Utterance: 'Yes, I am! I can't wait. I'm going on a 3 week trip to this gorgeous lake.'
No

Context: 'Let's talk about what we need. First, I don't eat meat, so I really feel like I'd need a little extra food, as I couldn't hunt or forage for food at all. I feel like I could survive without a ton of water, but would need water, as I hike a lot and cant trust any sources' 'I've also planned my trip to include a lot of hiking and so I have a high priority for extra water, as like you've said you need to stay hydrated on your hike and you can't trust any source. How can we divide up the water as that seems to be the number one priority for us both.' 'That works well, as long as I can have 2 food, I'll certainly give you 2 water, and I will have one water and you'll have one extra food'
Utterance: '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.'
Yes

Context: 'Same with me, good time of year' 'Yeah I'm hoping to relax with my family and enjoy the outdoors ' 'Same, i do ask though as i have a medical condition if i can have all the water, it is really hard for me to stay hydrated'
Utterance: 'oh that is tough. I am also looking for water. I need it to cook our food and it is going to be extra hot and I need to keep my family hydrated'

Yes