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.

Example Input: 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, or a pub.'
User: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'japanese restaurant i dont care about the price range'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'japanese restaurant'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'restaurant'
System: 'What part of town do you have in mind? For example, something in the Fen Ditton, New Chesterton, or Romsey area.'
User: 'i dont care'
System: 'Yippee Noodle Bar, which serves chinese take away and japanese food, is a great restaurant.'
User: 'i dont c'
System: 'Are you looking for somewhere near a particular venue? For example, Great Saint Mary's Church, the Ruskin Gallery, or Saint John's College.'
User: 'japan'
System: 'Are you looking for somewhere near a particular venue? For example, Artworks, the Museum of Classical Archaeology, or the Scott Polar Museum.'
User: 'scott polar museum'
System: 'Yippee Noodle Bar, which serves chinese take away and japanese food, is an outstanding restaurant.'
User: 'thank you goodbye'

Example Output: Don't Care

Example Input: 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: 'im looking for a unintelligible restaurant and i dont care about a price range'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'im looking for an international restaurant'
System: 'Giraffe is a great restaurant and it serves international food.'
User: 'what is the address phone number and price'
System: 'Giraffe is located on Christ's Lane and its phone number is 01223300707. The price for main courses ranges from 6 pounds 95 to 14 pounds 95 and the price for a cappuccino is 2 pounds 10.'
User: 'thank you good bye'

Example Output: Don't Care

Example Input: 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: 'system'
System: 'Are you looking for a venue with a television?'
User: 'system'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'no for pub food'
System: 'Are you looking for a venue with an internet connection?'
User: 'cheap pub food'
System: 'Are you looking for a venue that allows children?'
User: 'no'
System: 'Are you looking for a venue with an internet connection?'
User: 'no'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
User: 'system'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
User: 'system'
System: 'The Baron of Beef is an outstanding pub and it's in the cheap price range.'
User: 'thank you goodbye'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
User: 'thank you goodbye'

Example Output:
Cheap