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: 'i want to find a mexican tex mex restaurant and it should be inexpensive'
System: 'Are you looking for somewhere near a particular venue? For example, Churchill College, Clare Hall, or the Regency Gallery.'
User: 'no'
System: 'Nanna Mexico, which serves mexican and tex mex food, is an outstanding restaurant. It's in the expensive price range.'
User: 'can i get the address phone number and the postcode'
System: 'Nanna Mexico is on 33 Regent Street, its phone number is 01223902150 and it's in the area with the postcode CB2 1AB.'
User: 'thank you good bye'

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: 'a moderate priced restaurant in new chesterton'
System: 'Hakka, which is in the New Chesterton part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'what is the address and phone number'
System: 'Hakka is on 24 Milton Road and its phone number is 01223568988. The price for main courses ranges from 5 pounds to 13 pounds.'
User: 'sil'
System: 'Hakka is an outstanding restaurant.'
User: 'what type of partial'
System: 'Hakka serves chinese food.'
User: 'what type of food'
System: 'Hakka serves chinese food.'
User: 'thank you goodbye'

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: 'cafe food restaurant'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'dont care'
System: 'What part of town do you have in mind? For example, something in the Barnwell, New Chesterton, or riverside area.'
User: 'dont care'
System: 'Carringtons, which serves cafe food, is a great cafe and an outstanding restaurant. It serves english food.'
User: 'phone number and price'
System: 'The phone number of Carringtons is 01223361792. The price for main courses ranges from 4 pounds 25 to 6 pounds 25 and the price for a cappuccino is 1 pound 95.'
User: 'thank you good bye'

Example Output:
Don't Care