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: 'Hi there! How are you?' 'Great! I'm very excited to go camping, how about you?' 'I am! Now, I need a lot of firewood because we were planning on burning some earlier (to start cooking meals and such). I also need some extra food in case bugs come and eat some (like last trip, ugh). How about I take 2 firewood, 2 food, and you take 3 water, 1 firewood, and 1 food?'
Utterance: 'Would you be open to taking 1 less firewood, I would give you 1 food for it. The weather is supposed to be extra chilly and we did not bring warm enough sleeping bags so we need the extra firewood to avoid freezing to death!'

Ex Output:
Yes


Ex Input:
Context: 'Hello! Thats terrible that the airline lost your bags! I'm planning on have a large group of friends with me so we need lots of snacks with us. We are scared of fires so we don't want to make campfires.' 'Well maybe we can work something out between us.  Our food and water was in the bags they loss so I really need those.  Do you think you could make do with 1 food and some water?' 'I really need 2 foods. I can do with 1 water or if you are in a giving mood then maybe I can have 2 waters? 🙂'
Utterance: 'Looks like we both really need the food.  If you get 2 food I would need 1 food, 2 water and 3 firewood. '

Ex Output:
Yes


Ex Input:
Context: 'Definitely! I am glad we could come to an agreement. Do you like to camp a lot? Or hike?' 'I love to camp! Especially when there is enough firewood! It is a great (and inexpensive) activity for me I get a lot of enjoyment out of. Hopefully you will become an avid camper after this trip!' 'Haha maybe! I am afraid of some bugs though, especially ticks 😮'
Utterance: 'Yes, you have to check EVERYWHERE for ticks! And since we've come to an agreement, I will submit our deal!'

Ex Output:

No