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 food'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'moderate'
System: 'What type of food would you like? For example, Contemporary, English, or French.'
User: 'chinese'
System: 'The J Restaurant, which serves chinese food, is a great restaurant. It's in the moderate price range.'
User: 'chinese'
System: 'The J Restaurant is a great restaurant, it serves chinese food and it's in the moderate price range.'
User: 'give me information'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, Clare College, or the Gallery at twelve A High Street.'
User: 'the gallery at twelve and hide'
System: 'The J Restaurant is an outstanding restaurant, it serves chinese food and it's in the moderate price range.'
User: 'thats all i need'
System: 'The phone number of the J Restaurant is 01223307273.'
User: 'thank you good unintelligible'

Example Output: Moderate

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 cafe food restaurant'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'moderate price range'
System: 'Carringtons serves cafe food and english food. This place, which is a great cafe and an outstanding restaurant, is in the moderate price range.'
User: 'can you give me a phone number and price'
System: 'The phone number of Carringtons is 01223361792. The price for main courses ranges from 4 pounds 25 to 6 pounds 25 and the price for a cappuccino is 1 pound 95.'
User: 'thank you goodbye'

Example Output: Moderate

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: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'what is an expensive restaurant and in fen ditton'
System: 'The Riverside Restaurant, which is in the Fen Ditton part of town, is a great restaurant. It's in the expensive price range.'
User: 'what is the phone number'
System: 'The phone number of the Riverside Restaurant is 01223418997.'
User: 'what is the address'
System: 'The Riverside Restaurant is on Cambridge Regional College, Newmarket Road.'
User: 'thank you good bye'

Example Output:
Expensive