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 elicit-pref strategy, otherwise output No. elicit-pref is a cooperative negotiation strategy. It is used to discover the preference order of the opponent in the negotiation.

Example Input: Context: 'Hi there, fellow camper! 🙂' 'Hello 🙂 How are you?' 'I'm great! Just getting excited to go camping and dreaming of all the food I'll eat! Do you have any extra food?'
Utterance: 'Let me ask you, do you need food most? If yes, what do you need second most?'
Example Output: Yes

Example Input: Context: 'Hi, '
Utterance: 'Hello. What sort of supplies are you looking for?'
Example Output: Yes

Example Input: Context: 'Hello' 'Hi there.. how are you doing today?  I hope well!  🙂  So, it looks like we need to divy up these supplies, huh?  Do you have any thoughts on the issue?'
Utterance: 'I'm doing fine thank you, how about you? Well for my trip I'm most interesting in socializing so a great campfire a night would be great, I'd prefer not to boil water either so want extra of that too. Food less so as I will go fishing and know wild vegetables, fruits and mushrooms I can pick. How about you?'
Example Output:
Yes