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: 'im looking for an expensive restaurant in the romsey area'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address and price'
System: 'The Backstreet Bistro is located on 2 Sturton Street. The price for main courses ranges from 10 pounds 95 to 14 pounds 25.'
User: 'thank you goodbye'

Example Output: Expensive

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 restaurant in cherry hinton'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'i dont care about the price range'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'the price range doesnt matter'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'the price range is not important what type of food'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'the pri i dont care about the price range'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'the price range is not important'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'i dont care about the price range'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'the price range is not important'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'i dont care about the price range'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'i dont care about the price range'
System: 'What kind of price range are you looking for? For example, expensive.'
User: 'i dont care about the price range'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'the price range is not important'
System: 'What kind of price range are you looking for? For example, free.'
User: 'the price range does not matter'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'the price range is not important'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'the price range does not matter'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'price range does not matter'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
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: 'im looking for a cheap coffee shop'
System: 'What type of food would you like? For example, Chinese take away, pub, or English.'
User: 'italian'
System: 'Clowns is an outstanding cafe and a great restaurant, it serves italian food and it's in the cheap price range.'
User: 'what is the address and phone number'
System: 'Clowns is located on 54 King Street. Its phone number is 01223355711.'
User: 'what area is that in'
System: 'Clowns is in the central part of town.'
User: 'thank you good bye'

Example Output:
Cheap