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: 'a thai restaurant expensive price range'
System: 'The Wrestlers is a great restaurant, it serves thai food and it's in the expensive price range.'
User: 'address and postcode'
System: 'The Wrestlers is located on 337 Newmarket Road and it's in the area with the postcode CB5 8JE. The price for main courses ranges from 8 pounds 50 to 9 pounds 70 and the price for a cheapest pint of beer is 3 pounds 30.'
User: 'thank you and the postcode'
System: 'The Wrestlers is in the area with the postcode CB5 8JE.'
User: 'thank you goodbye'

Example Output: Expensive

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: 'hi im looking for a thai restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'i dont care about the pr the price range'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or New Chesterton area.'
User: 'new chesterton area'
System: 'There is no restaurant in the New Chesterton area and serving thai food.'
User: 'so where can i get a thai food restaurant'
System: 'There is no restaurant in the New Chesterton area and serving thai food.'
User: 'can you select me another venue'
System: 'Would you like a new chesterton area, or you don't care?'
User: 'i dont care'
System: 'The Wrestlers, which serves thai food, is a great restaurant.'
User: 'background noise'
System: 'The phone number of The Wrestlers is 01223566554.'
User: 'ok can i get the address and the price range'
System: 'The Wrestlers is on 337 Newmarket Road. The price for main courses ranges from 8 pounds 50 to 9 pounds 70 and the price for a cheapest pint of beer is 3 pounds 30.'
User: 'background noise'
System: 'The Wrestlers is a great restaurant.'
User: 'and the phone number please'
System: 'The phone number of The Wrestlers is 01223566554.'
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: 'im looking for a coffee in the city center'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'i dont care what price range'
System: 'What type of food would you like? For example, American, French, or Seafood.'
User: 'it does not matter'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Indian, or Italian.'
User: 'i dont care'
System: 'Carringtons, which is an outstanding cafe and a great restaurant, is in the central part of town.'
User: 'what type of food does it serve'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'ah what type of food does the venue serve'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'no i want to know what type of food this cafe serves'
System: 'Carringtons serves cafe food and english food.'
User: 'ok what is the address'
System: 'Carringtons is on 23 Market Street.'
User: 'ok thank you good bye'

Example Output:
Don't Care