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: Consider 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: 'breathing'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'expensive restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Corpus Christi, Old Schools, or the Ruskin Gallery.'
User: 'romsey area'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Chesterton, or riverside area.'
User: 'romsey are'
System: 'Are you looking for a venue in the Girton or Romsey area?'
User: 'romsey'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is a great restaurant. It's in the expensive price range.'
User: 'background noise'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is a great restaurant. It's in the expensive price range.'
User: 'phone number and postcode'
System: 'The phone number of the Backstreet Bistro is 01223306306 and it's in the area with the postcode CB1 2QA.'
User: 'phone number and postcode'
System: 'The phone number of the Backstreet Bistro is 01223306306 and it's in the area with the postcode CB1 2QA.'
User: 'thank you good bye'


Output: Expensive


Input: Consider 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 chinese takeaway restaurant in the moderate price range'
System: 'Yippee Noodle Bar is a great restaurant, it serves chinese take away and japanese food and it's in the moderate price range.'
User: 'im a looking for a cheap price range'
System: 'Yippee Noodle Bar, which serves chinese take away, is a great restaurant. This place, which serves japanese food, is in the moderate price range.'
User: 'im looking for a restaurant in the cheap price range'
System: 'Saigon City, which serves chinese take away, is a great restaurant. It's in the cheap price range.'
User: 'what is its address'
System: 'Saigon City is on 169 High Street, Chesterton. The price for main courses ranges from 4 pounds 60 to 5 pounds 10.'
User: 'im looking for an restaurant that serves chinese take away food'
System: 'Saigon City is a great restaurant, it serves chinese take away and it's in the cheap price range.'
User: 'what is its post code'
System: 'Saigon City is in the area with the postcode CB4 1NL.'
User: 'what is its telephone number'
System: 'The phone number of Saigon City is 01223356555.'
User: 'sil'
System: 'Saigon City is an outstanding restaurant.'
User: 'breathing sil'
System: 'Would you like chinese or X food?'
User: 'thank you good bye'


Output: Cheap


Input: Consider 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 in trumpington'
System: 'What type of food would you like? For example, Cafe food, Greek, or Italian.'
User: 'cafe'
System: 'The Oak Bistro is an outstanding restaurant and it's in the Trumpington part of town.'
User: 'address'
System: 'The Oak Bistro is on 6 Lensfield Road.'
User: 'phone number'
System: 'The phone number of The Oak Bistro is 01223323361.'
User: 'postcode'
System: 'The Oak Bistro is in the area with the postcode CB2 1EG.'
User: 'sil'
System: 'The Oak Bistro is an outstanding restaurant.'
User: 'postcode'
System: 'The Oak Bistro is in the area with the postcode CB2 1EG.'
User: 'thank you good bye'



Output: Don't Care


