Detailed Instructions: The input is a conversation between an automated system and a user looking for suggestions for pubs, restaurants and coffee shops in Cambridge. In the dialogue, the user may provide some criteria for the type of place they want such as price range, cuisine, etc. Given such a dialogue, output the price range the user if looking for which can take one of four values: Cheap, Moderate, Expensive and Don't Care. Output cannot be any other value than the four values. Note that if the user asks for the prices of items provided at a pub, restaurant or coffee shop but doesn't mention the price range they are looking for then the correct classification will be Don't Care. If the user does not mention a particular price, the correct classification will be Don't Care.
Problem:System: 'Thank you for calling the Cambridge Information system. Your call will be recorded for research purposes. You may ask for information about a place to eat, such as a restaurant, a pub, or a cafe. How may I help you?'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'restaurant'
System: 'What type of food would you like? For example, Cafe food, Italian, or Vegetarian.'
User: 'drinks and snacks'
System: 'Are you looking for somewhere near a particular venue? For example, Churchill College, the Museum of Archaelogy and Anthropology, or the Scott Polar Museum.'
User: 'no'
System: 'The Fleur, which serves drinks and snacks, is a great restaurant.'
User: 'okay'
System: 'The Fleur is a great restaurant. It serves drinks and snacks.'
User: 'can i have the phone number and address'
System: 'The Fleur is on 73 Humberstone Road and its phone number is 01223902183.'
User: 'repeat'
System: 'The Fleur is an outstanding restaurant.'
User: 'a phone number'
System: 'The phone number of The Fleur is 01223902183.'
User: 'address'
System: 'The Fleur is located on 73 Humberstone Road.'
User: 'address'
System: 'The Fleur is located on 73 Humberstone Road.'
User: 'hammerstone road'
System: 'The Fleur, which serves drinks and snacks, is a great restaurant.'
User: 'address'
System: 'The Fleur is located on 73 Humberstone Road.'
User: 'unintelligible'
System: 'The Alma is an outstanding pub.'
User: 'thank you goodbye'

Solution:
Moderate