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, the trip sounds like it will be a lot of fun.  What is the most important essential package for you and your family?  I know we didnt bring a lot of food so I am looking for more of that than anything else.' 'Yes! Hope for lot of fun. Is there any special deal can you offer for maximum order.'
Utterance: 'What item are you looking for the most of?  '
Example Output: Yes

Example Input: Context: 'Hello there! How are you today?' 'I am fine . How about you?'
Utterance: 'I am doing well so far. 🙂 What items are of preference for you today?'
Example Output: Yes

Example Input: Context: 
Utterance: 'Hi there. How are you?'
Example Output:
No