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: 'restaurant'
System: 'What type of food would you like? For example, pub, Middleeastern, or Vegetarian.'
User: 'barnwell area'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Mediterranean, or Turkish.'
User: 'mexican'
System: 'Are you looking for somewhere near a particular venue? For example, Cambridge Contemporary Art, Little Saint Mary's, or Saint John's College.'
User: 'no'
System: 'Chiquito, which serves mexican and tex mex food, is an outstanding restaurant.'
User: 'barnwell area'
System: 'The Wheatsheaf is a great restaurant and it's in the Barnwell part of town.'
User: 'andr address'
System: 'The Wheatsheaf is located on Stow Road, Stow-Cum-Quy.'
User: 'address'
System: 'The Wheatsheaf is located on Stow Road, Stow-Cum-Quy.'
User: 'phone number'
System: 'The phone number of the Wheatsheaf is 01223812196.'
User: 'phone number'
System: 'The phone number of the Wheatsheaf is 01223812196.'
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: 'noise sil'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'noise sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'expensive'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'traditional restaurant'
System: 'What part of town do you have in mind? For example, something in the Girton, riverside, or Romsey area.'
User: 'a traditional restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Downing College, or Great Saint Mary's Church.'
User: 'dont care'
System: 'The Granta Bar, which is in the expensive price range, is a great restaurant. It serves traditional food.'
User: 'no'
System: 'The Granta Bar is a great restaurant, it serves traditional food and it's in the expensive price range.'
User: 'what is the address'
System: 'The Granta Bar is located on University Centre, Granta Place.'
User: 'what is the postal code'
System: 'The Granta Bar is in the area with the postcode CB2 1RU.'
User: 'what is the address'
System: 'The Granta Bar is located on University Centre, Granta Place.'
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: 'looking for an expensive indian restaurant'
System: 'Blue Spice is an outstanding restaurant, it serves indian food and it's in the expensive price range.'
User: 'breathing sil'
System: 'Blue Spice is a great restaurant, it serves indian food and it's in the expensive price range.'
User: 'breathing sil'
System: 'Blue Spice is an outstanding restaurant. It serves indian food. It's in the expensive price range.'
User: 'what is the telephone number'
System: 'The phone number of Blue Spice is 01223413337.'
User: 'what is the area breathing'
System: 'Blue Spice is in the Girton part of town.'
User: 'what is the area'
System: 'Blue Spice is in the Girton part of town.'
User: 'thank you good bye'

Example Output:
Expensive