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 a cheap italian restaurant'
System: 'Clowns, which serves italian food, is an outstanding cafe and a great restaurant. It's in the cheap price range.'
User: 'what is the address and phone number'
System: 'Clowns is on 54 King Street and its phone number is 01223355711.'
User: 'thank you good bye'

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: 'ah looking for a cafe food restaurant'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'doesnt matter'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'ah not important'
System: 'What kind of price range are you looking for? For example, cheap, 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: 'doesnt matter i dont care'
System: 'Are you looking for somewhere near a particular venue? For example, Castle Galleries, Cherry Hinton Water Play, or the Museum of Archaelogy and Anthropology.'
User: 'uh i dont care'
System: 'What part of town do you have in mind? For example, Castle Hill, or riverside.'
User: 'doesnt matter'
System: 'Carringtons is a great cafe and an outstanding restaurant. It serves cafe food. It serves english food.'
User: 'whats the address and area'
System: 'Carringtons is on 23 Market Street. It's in the moderate price range.'
User: 'what area is it in'
System: 'Carringtons is in the central part of town.'
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: 'sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'a cheap restaurant'
System: 'What type of food would you like? For example, Cafe food, pub, or Continental.'
User: 'pub'
System: 'Let me confirm. You are looking for a restaurant.'
User: 'correct'
System: 'What type of food would you like? For example, Drinks and snacks only, or Fusion.'
User: 'sure yes'
System: 'What type of food would you like? For example, American, or Vegetarian.'
User: 'cheap'
System: 'What type of food would you like? For example, Chinese take away, Japanese, or Spanish.'
User: 'american'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'american'
System: 'There is no restaurant in the Girton area. There is no restaurant serving american food.'
User: 'ok'
System: 'The Dojo Noodle Bar is an outstanding restaurant.'
User: 'ok'
System: 'Gourmet Burger , which serves american food, is an outstanding restaurant. It's in the cheap price range.'
User: 'thank you good bye'

Example Output:
Cheap