Instructions: 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.
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: 'restaurant'
System: 'What part of town do you have in mind? For example, Cherry Hinton, or New Chesterton.'
User: 'breathing sil'
System: 'What type of food would you like? For example, Greek, Italian, or Japanese.'
User: 'breathing sil'
System: 'What type of food would you like? For example, Northern european, Continental, or Japanese.'
User: 'american'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, central, or Girton area.'
User: 'dont care'
System: 'Gourmet Burger , which serves american food, is a great restaurant.'
User: 'breathing sil'
System: 'Are you looking for somewhere near a particular venue? For example, Great Saint Mary's Church, or King's College.'
User: 'breathing sil'
System: 'Are you looking for somewhere near a particular venue? For example, the Gallery at twelve A High Street, Gonville and Caius College, or the People's Portraits Exhibition.'
User: 'no'
System: 'Gourmet Burger  is an outstanding restaurant and it serves american food.'
User: 'cheap'
System: 'Gourmet Burger  is an outstanding restaurant, it serves american food and it's in the cheap price range.'
User: 'breathing cheap'
System: 'Gourmet Burger  is a great restaurant. It serves american food. It's in the cheap price range.'
User: 'phone number and area'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'area'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'area'
System: 'Gourmet Burger  is a great restaurant.'
User: 'area'
System: 'Gourmet Burger  is a great restaurant.'
User: 'what area'
System: 'Gourmet Burger  is in the central part of town.'
User: 'thank you good bye'

Output:
Cheap