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: 'Hello there, I'm in a lot of need for some firewood! I'd not be against taking most of it if that's alright?' 'Hi, I need the all food package. I will frequently feel hungry'
Utterance: 'I can give you two of the packages if you're willing to give me all 3 of the firewood. I left mine out in the rain a couple of nights ago so its all ruined.'
Example Output: Yes

Example Input: Context: 'I might be able to get by with just two... I'm on a diet though, so I don't need as much food.' 'That's a relief. I actually have a friend joining me and they don't have their own food supply. I don't have enough for two people.' 'You can all the food if you need it.🙂'
Utterance: 'Thanks!🙂 Do you need any water packages?'
Example Output: No

Example Input: Context: 'I have been camping before, but it has been a while. You?' 'Same for me!!' 'What sort of extra supplies are you looking for?'
Utterance: 'I would really appreciate if I am able to take 2 of the food packages since I am a vegan and its hard to find options in the woods and if i can have 2 or 3 of the waters because i have a baby coming with me and i need it for his formula! '
Example Output:
Yes