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: '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 can give 3 packages of food and 1 water.  ' 'So 1 firewood, 0 food and 3 water for you?' 'No 3 packages of firewood, 1 package of water, and I can give you 3 packages of food.  I need the Firewood the most.'
Utterance: 'Tell me why you need so much firewood?'

SOLUTION: Yes

PROBLEM: Context: 'I'm excited too! I am an avid fisherman so I can't wait to catch plenty of fish for us to eat.' 'Do you need extra firewood to cook the fish? I have a bunch.' 'I do need a little firewood to cook the fish. However, it's so hot outside that I may get dehydrated. '
Utterance: 'Ah, so you want some extra water too? I have a lot of lemonade mix for the kids so I'll need water for them.'

SOLUTION:
Yes