TASK DEFINITION: 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.
PROBLEM: Context: 
Utterance: 'Hello! What camping supplies are you looking for the most?'

SOLUTION: Yes

PROBLEM: Context: 'Not completely aware but I do have a filter that I brought from home. What are your needs?' 'Ok me too! I am concerned the most with firewood as it is the basis for my camping activities: campfire, story telling, and producing heat. ' 'OK so how about you take 2 firewoods and 1 food'
Utterance: 'That works for me. May I have two waters since I have more of a need of water'

SOLUTION: No

PROBLEM: Context: 
Utterance: 'Hello. I am so looking forward to this camp out. My daughter just called and said she is going to come and bring some of her firiends. 🙂'

SOLUTION:
No