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.

[EX Q]: 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 kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'a restaurant in the trumpington area'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'expensive'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'expensive'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, the Book and Print Gallery, or Williams Art and Antiques.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, Christ's College, or the Museum of Classical Archaeology.'
User: 'trumpington'
System: 'What type of food would you like? For example, Drinks and snacks only, Chinese, or Greek.'
User: 'sil'
System: 'What type of food would you like? For example, Continental, or Turkish.'
User: 'trumpington'
System: 'What type of food would you like? For example, Continental, Greek, or Seafood.'
User: 'i dont care'
System: 'Can I help you with anything else?'
User: 'i dont care'
System: 'Can I help you with anything else?'
User: 'yes'
System: 'Are you looking for somewhere near a particular venue? For example, Great Saint Mary's Church, Jesus College, or the Whipple Museum.'
User: 'yes'
System: 'Are you looking for somewhere near a particular venue? For example, the People's Portraits Exhibition, Saint Catharine's College, or Wandlebury Country Park.'
User: 'no'
System: 'The Oak Bistro is an outstanding restaurant, it's in the Trumpington part of town and it's in the expensive price range.'
User: 'no'
System: 'The phone number of The Oak Bistro is 01223323361.'
User: 'thank you goodbye'

[EX A]: Expensive

[EX Q]: 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 kind of price range are you looking for? For example, free, or moderate.'
User: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'an italian restaurant'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'i dont care'
System: 'Are you looking for somewhere near a particular venue? For example, the Gallery at twelve A High Street, the Regency Gallery, or the Saint Barnabas Press Gallery.'
User: 'i would like a japanese restaurant moderately priced'
System: 'Would you like a moderate price range, or you don't care?'
User: 'in moderate price range'
System: 'Would you like japanese or X food?'
User: 'japanese'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, the Gallery at twelve A High Street, or Little Saint Mary's.'
User: 'no'
System: 'Yippee Noodle Bar, which serves chinese take away, is an outstanding restaurant. It serves japanese food and it's in the moderate price range.'
User: 'may i have the address and phone number'
System: 'Yippee Noodle Bar is located on 7-9 King Street and its phone number is 01223518111.'
User: 'what area is it in'
System: 'Yippee Noodle Bar is in the central part of town.'
User: 'may i have the phone number'
System: 'The phone number of Yippee Noodle Bar is 01223518111.'
User: 'thank you goodbye'

[EX A]: Moderate

[EX Q]: 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: 'ok'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'i want to fin a moderately priced restaurant in the barnwell area'
System: 'The Wheatsheaf, which is in the Barnwell part of town, is a great restaurant. It's in the moderate price range.'
User: 'what is the address'
System: 'The Wheatsheaf is located on Stow Road, Stow-Cum-Quy.'
User: 'what are the prices'
System: 'The Wheatsheaf is an outstanding venue. The price for main courses ranges from 4 pounds to 13 pounds and the price for a cheapest pint of beer is 2 pounds 65.'
User: 'thank you and good bye'

[EX A]:
Moderate