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.

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: 'unintelligible sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'unintelligible sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'im looking for a expensive pub food restaurant'
System: 'What type of food would you like? For example, American, Indian, or Japanese.'
User: 'restaurant with pub food'
System: 'Revolution is an outstanding restaurant. It serves pub food. It's in the expensive price range.'
User: 'pub food'
System: 'Revolution, which serves pub food, is an outstanding restaurant. It's in the expensive price range.'
User: 'may i have the address and area'
System: 'Revolution is located on 3-7 Downing Street.'
User: 'area'
System: 'Revolution is an outstanding restaurant.'
User: 'sil'
System: 'Revolution is a great restaurant.'
User: 'what area is the restaurant in'
System: 'Revolution is in the central part of town.'
User: 'in what area'
System: 'Revolution is in the central part of town.'
User: 'thank you and good bye'


A: Expensive
****
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: 'hello i am looking for a moderately priced restaurant in 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: 'ok so can you please tell me the address and phone number of the restaurant'
System: 'The Wheatsheaf is the only restaurant in the Barnwell area in the moderate price range.'
User: 'what is the address and the phone number'
System: 'The Wheatsheaf is located on Stow Road, Stow-Cum-Quy and its phone number is 01223812196.'
User: 'sil'
System: 'The Wheatsheaf is an outstanding restaurant.'
User: 'ok ah what types of food'
System: 'The Wheatsheaf serves traditional food.'
User: 'ok what type of food unitelligible'
System: 'The Wheatsheaf serves traditional food.'
User: 'ok thank you good bye'


A: Moderate
****
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: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, the Technology Museum, Emmanuel College, or the Michaelhouse Centre.'
User: 'italian restaurant'
System: 'What kind of price range are you looking for? For example, free. I can't hear you. What kind of price range are you looking for? For example, free.'
User: 'expensive'
System: 'Are you looking for somewhere near a particular venue? For example, the Folk Museum, Clare Hall, or Pembroke College.'
User: 'expensive'
System: 'Are you looking for somewhere near a particular venue? For example, Jesus College, Old Schools, or the Scott Polar Museum.'
User: 'cambridge college'
System: 'Are you looking for somewhere near a particular venue? For example, Castle Galleries, Christ's College, or Trinity College.'
User: 'any'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Castle Hill, or Cherry Hinton area.'
User: 'let me have an address'
System: 'What part of town do you have in mind? For example, something in the Fen Ditton, New Chesterton, or riverside area.'
User: 'thank you goodbye'


A:
Expensive
****