instruction:
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.
question:
Context: 
Utterance: 'Hello, what do you need the most for your camping trip?'
answer:
Yes


question:
Context: 'hello' 'Hello there' 'how is your day going?'
Utterance: 'So far so good.  What are your plans for your camping trip?'
answer:
Yes


question:
Context: 'Hello! I am looking forward to the camping trip but could use a few more supplies!' 'hello, me too, i guess we can share'
Utterance: 'Sounds good, I need food the most, what is your most needed item?'
answer:

Yes