TASK DEFINITION: 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.
PROBLEM: 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 middle eastern restaurant'
System: 'Al Casbah is a great restaurant and it serves mediterranean and middleeastern food.'
User: 'what is the price range'
System: 'Al Casbah is in the moderate price range. The price for main courses ranges from 8 pounds 95 to 12 pounds 95.'
User: 'what is the address'
System: 'Al Casbah is located on 62 Mill Road.'
User: 'postcode please'
System: 'Al Casbah is in the area with the postcode CB1 2AS.'
User: 'thank you good bye'


SOLUTION: Moderate

PROBLEM: 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 cafe food restaurant'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'i do not care'
System: 'Let me confirm. You don't care about the price range. You are looking for a venue.'
User: 'yes'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, the Regency Gallery, or the Whipple Museum.'
User: 'i do not care'
System: 'Let me confirm. You don't care about the location and you are looking for a venue.'
User: 'yes'
System: 'Carringtons is a great cafe and an outstanding restaurant. It serves cafe food and english food.'
User: 'what is the phone number and area of the venue'
System: 'The phone number of Carringtons is 01223361792.'
User: 'what is the area of the venue'
System: 'Carringtons is in the central part of town.'
User: 'thank you good bye'


SOLUTION: Don't Care

PROBLEM: 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: 'i want a'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'i want a cheap coffee shop'
System: 'What part of town do you have in mind? For example, Barnwell, or central.'
User: 'cheap'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Fen Ditton, or Girton area.'
User: 'i dont care'
System: 'Are you looking for somewhere near a particular venue? For example, Castle Galleries, Sidney Sussex College, or Primavera.'
User: 'i dont care'
System: 'The Cambridge Blue, which is in the cheap price range, is a great cafe.'
User: 'what is the address and phone number'
System: 'The Cambridge Blue is located on 24 Regent Street. Its phone number is 01223369222.'
User: 'thank you goodbye'


SOLUTION:
Cheap