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: 'im looking for an expensive restaurant in the castle hill area'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Newnham, or Romsey area.'
User: 'ah castle hill area'
System: 'What type of food would you like? For example, Drinks and snacks only, Continental, or International.'
User: 'ah doesnt matter'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'expensive restaurant'
System: 'Let me confirm. You don't care about the food and you are looking for a venue.'
User: 'yes venue'
System: 'Are you looking for somewhere near a particular venue? For example, the Book and Print Gallery, Christ's College, or Pembroke College.'
User: 'no'
System: 'Blue Spice, which is in the expensive price range, is a great restaurant.'
User: 'ah sounds good whats the price'
System: 'Blue Spice is an outstanding venue. The price for main courses ranges from 12 pounds 50 to 12 pounds 50.'
User: 'and whats the phone number'
System: 'The phone number of Blue Spice is 01223413337.'
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: 'sil'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, central, or Newnham area.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'northern european restaurant'
System: 'Polonia is an outstanding restaurant and it serves northern european food.'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, King's Hedges, or Romsey area.'
User: 'i dont care about the price range'
System: 'Polonia is a great venue. The price for main courses ranges from 1 pound 50 to 7 pounds 50.'
User: 'romsey area'
System: 'Polonia is in the riverside part of town.'
User: 'thank you and 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: 'can i find an expensive restaurant near addonbrookes area'
System: 'Are you looking for a cafe or a restaurant?'
User: 'noise sil'
System: 'Are you looking for a pub or a restaurant?'
User: 'im looking for a expensive restaurant'
System: 'What type of food would you like? For example, East asian, American, or Mediterranean.'
User: 'any pub i dont care'
System: 'The Lucky Star is a great restaurant, it's in the Addenbrooke's part of town and it's in the expensive price range.'
User: 'wha i can fi find unintelligible phone number address and of the venue'
System: 'The phone number of the Lucky Star is 01223244277.'
User: 'and the address of the venue'
System: 'The Lucky Star is on Unit.'
User: 'noise sil'
System: 'The Lucky Star is an outstanding restaurant.'
User: 'noise sil'
System: 'The Lucky Star is an outstanding restaurant.'
User: 'noise can i know the address'
System: 'The Lucky Star is on Unit.'
User: 'the lucky star restaurant in a'
System: 'The Lucky Star is a great restaurant.'
User: 'ok can i know the address of the lucky star restaurant'
System: 'The Lucky Star is located on Unit.'
User: 'thank you good bye'

Example Output:
Expensive

