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: 'yes im looking for a pub food restaurant and it should have cheap price range'
System: 'Are you looking for somewhere near a particular venue? For example, Clare College, or Sidney Sussex College.'
User: 'no'
System: 'The Fountain Inn, which serves pub food, is an outstanding restaurant. It's in the cheap price range.'
User: 'what is the address phone number and the price'
System: 'The Fountain Inn is located on 12 Regent Street and its phone number is 01223366540. The price for main courses ranges from 4 pounds 95 to 7 pounds 95 and the price for a glass of wine ranges from 3 pounds to 4 pounds 50 and the price for a cheapest pint of beer is 2 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: 'noise sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'what is a cheap restaurant in addonbrookes'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, New Chesterton, or Trumpington area.'
User: 'addonbrookes'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Artworks, or Gonville and Caius College.'
User: 'no'
System: 'What part of town do you have in mind? For example, Romsey, or Trumpington.'
User: 'addonbrookes'
System: 'What type of food would you like? For example, Chinese take away, Chinese, or Mediterranean.'
User: 'doenst matter'
System: 'La Raza is a great restaurant and it's in the cheap price range.'
User: 'what is the address'
System: 'Let me confirm. You don't care about the food. You are looking for a venue.'
User: 'what is the address'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'yes'
System: 'Are you looking for a pub or a restaurant?'
User: 'what is a cheap restaurant in addonbrookes'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'what is the post code'
System: 'La Raza is in the area with the postcode CB2 3LL.'
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: 'a place to eat'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'a restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, Churchill College, or Clare College.'
User: 'im looking in a area of addenbrookes'
System: 'What type of food would you like? For example, Contemporary, Indian, or Middleeastern.'
User: 'any kind of food but with expensive restaurant'
System: 'Blue Spice, which is in the expensive price range, is an outstanding restaurant.'
User: 'uh whats the phone number and the address of the venue'
System: 'Blue Spice is on Unit F1, Cambridge Leisure Park, Clifton Way and its phone number is 01223413337.'
User: 'thank you goodbye'
System: 'Blue Spice is an outstanding restaurant. I can't hear you. Blue Spice is an outstanding restaurant.'
User: 'thank you goodbye'

Example Output:
Expensive