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: 'yes i would like to find a an expensive restaurant in the addenbrookes area'
System: 'What type of food would you like? For example, Chinese, Greek, or Indian.'
User: 'unintelligible'
System: 'There is no restaurant in the Addenbrooke's area and serving greek food.'
User: 'anything'
System: 'Would you like an addenbrooke's area, or you don't care?'
User: 'addenbrookes area'
System: 'Let me confirm. You are looking for a venue in the expensive price range.'
User: 'yes'
System: 'Would you like a greek food, or you don't care?'
User: 'i dont care'
System: 'The Lucky Star is an outstanding restaurant. It's in the Addenbrooke's part of town. It's in the expensive price range.'
User: 'what type of food'
System: 'The Lucky Star serves chinese food.'
User: 'ok whats the address and phone number'
System: 'The Lucky Star is on Unit and its phone number is 01223244277.'
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: 'i want to find a continental restaurant with an expensive price range'
System: 'Alimentum, which serves continental food, is a great restaurant. This place, which serves french food, is in the expensive price range.'
User: 'whats the address phone number and postcode'
System: 'Alimentum is located on 152-154 Hills Road, its phone number is 01223413000 and it's in the area with the postcode CB2 8PB. The price for main courses ranges from 17 pounds 50 to 21 pounds and the price for a glass of wine ranges from 6 pounds 50 to 10 pounds 50.'
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: 'background noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'im looking for a restaurant in newnham'
System: 'The Red Bull is a great restaurant and it's in the Newnham part of town.'
User: 'newnham'
System: 'The Red Bull, which is in the Newnham part of town, is a great restaurant.'
User: 'can i get the address and the type of food that they sell'
System: 'The Red Bull is located on 11 Barton Road, Newnham.'
User: 'what type of food do they sell'
System: 'The Red Bull serves italian food.'
User: 'thank you good bye'

Example Output:
Don't Care