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, a pub, or a restaurant.'
User: 'a thai restaurant and it should have a moderate price range'
System: 'Bangkok City, which serves thai food, is a great restaurant. It's in the moderate price range.'
User: 'alright please give me the phone number and the area'
System: 'The phone number of Bangkok City is 01223354382.'
User: 'and the area please'
System: 'Bangkok City is in the central part of town.'
User: 'alright thank you good bye'

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: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'cheap'
System: 'Are you looking for somewhere near a particular venue? For example, the Broughton House Gallery, Castle Galleries, or Hughes Hall.'
User: 'city center'
System: 'What type of food would you like? For example, Continental, Indian, or International.'
User: 'it doesnt matter if city center'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, the Folk Museum, or the Scott Polar Museum.'
User: 'it doesnt matter'
System: 'La Raza is a great restaurant. It's in the central part of town. It's in the cheap price range.'
User: 'it dunt uh city center'
System: 'Are you looking for a pub or a restaurant?'
User: 'restaurant'
System: 'La Raza is a great restaurant, it's in the central part of town and it's in the cheap price range.'
User: 'ok what is the address phone number'
System: 'La Raza is on 4-6, The Basement, Rose Crescent and its phone number is 01223464550.'
User: 'um what is the price'
System: 'La Raza is an outstanding venue. The price for main courses ranges from 1 pound 95 to 13 pounds 95 and the entrance for adults is 4 pounds.'
User: 'thank you goodbye'

Example Output: Cheap

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: 'unintelligible northern european in a cheap price range'
System: 'Polonia, which serves northern european food, is a great restaurant. It's in the cheap price range.'
User: 'whats the address'
System: 'Polonia is on 231 Chesterton Road. The price for main courses ranges from 1 pound 50 to 7 pounds 50.'
User: 'whats the phone number'
System: 'The phone number of Polonia is 01223902138.'
User: 'whats the price range'
System: 'Polonia is in the cheap price range.'
User: 'and whats the post code'
System: 'Polonia is in the area with the postcode CB4 1AS.'
User: 'thank you good bye'

Example Output:
Cheap