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.

Q: Context: 'Ok, do you have any interest in any fire wood?' 'I do need firewood, we cook over open flames. 😮How you get 2 water, 1 food and 1 firewood?' 'How about if I give you 3 food for 3 waters, and then we split the firewood?'
Utterance: 'I do require at least one water, hiking is very physical demanding. Also there are 3 firewoods?'

A: Yes
****
Q: Context: 'Hello I'm really hungry and thirsty and want some food and water if that's ok with you. '
Utterance: 'Well some is okay but not all. The thing is that we left in a hurry and forgot to pick up the bag with the extra food items. I am sorry but we have kids with us so we will need the food. Am sure you understand ☹️'

A: Yes
****
Q: Context: 'It has been extremely dry in the area I will be going to so I was hoping to get a little extra water too.  I do. I love hiking and running trails!  Due to the extreme dry weather I should have plenty of wood I can scavenge for if you need all of it!' 'Hmm. Maybe we could go out together on a run. 🙂Always nice to have a running partner. So maybe on the water you get 2, me 1. Then on the Firewood the opposite?' 'That would be fun! I feel like I always do better when I have someone to run against.  Competition does me good. That sounds fantastic on the fire wood and water split.  What is your food situation looking like??'
Utterance: 'How about this? 2 for you and 1 for me. Going low carb and mostly brought my own. What do you think? '

A:
No
****