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: 'restaurant'
System: 'What type of food would you like? For example, Fusion, Italian, or Vegetarian.'
User: 'italian'
System: 'Are you looking for somewhere near a particular venue? For example, Churchill College, Corpus Christi, or Old Schools.'
User: 'addenbrookes'
System: 'What kind of price range are you looking for? For example, expensive.'
User: 'expensive'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, Cafe Jello, or the People's Portraits Exhibition.'
User: 'addenbrookes area'
System: 'The Sorrento, which is in the Addenbrooke's part of town, is an outstanding restaurant. It serves italian food.'
User: 'phone number'
System: 'The phone number of The Sorrento is 01223243533.'
User: 'postcode of the venue'
System: 'The Sorrento is in the area with the postcode CB1 7AN.'
User: 'address'
System: 'The Sorrento is located on 196 Cherry Hinton Road.'
User: 'thank you good bye'

Solution:
Expensive