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: '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?'
Example Output: Yes

Example Input: Context: 'Got it! I am going to need the most of food. There aren't any animals or berries that I feel safe eating where I'm going.' 'Well I think we can make a good deal then.  How many packages of food would you want?' 'Could we each do 3 of what we need the most? I get three food and you get three water? How do you propose splitting up the firewood?'
Utterance: 'We can do the 3 for 3 trade.  That works perfectly!  Its' going to be cold at night where I'm going.  What's it like where you're heading?'
Example Output: Yes

Example Input: Context: 'Hi. Can you help me get supplies for my camping trip?🙂' 'Hello fellow camper! I'm pretty sure I can help you. 🙂'
Utterance: 'Okay, great! What do you need the most?'
Example Output:
Yes