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 there. I'd like to discuss making a deal.'

SOLUTION: No

PROBLEM: Context: 'Hello fellow camper! I am interested to know your preference in items?'
Utterance: 'Hello! Yes I'm excited for the trip. 🙂 My most important is food. How about you?'

SOLUTION: Yes

PROBLEM: Context: 'I will submit a deal that might benefit us both.  ' 'We can work on that together' 'What is on your most needed item?'
Utterance: 'I need Food, what is yours?'

SOLUTION:
Yes