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 thai restaruant and it should have an exp expensive price range'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or Cherry Hinton area.'
User: 'i dont care'
System: 'The Wrestlers is an outstanding restaurant, it serves thai food and it's in the expensive price range.'
User: 'great can i get the address phone number and post code'
System: 'The Wrestlers, which is in the area with the postcode CB5 8JE, is located on 337 Newmarket Road. Its phone number is 01223566554. The price for main courses ranges from 8 pounds 50 to 9 pounds 70 and the price for a cheapest pint of beer is 3 pounds 30.'
User: 'thank you good bye'


SOLUTION: Expensive

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: 'breathing'
System: 'Let me confirm. You don't care about children and you are looking for a venue.'
User: 'expensive restaurant'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'expensive'
System: 'What type of food would you like? For example, East asian, Northern european, or Seafood.'
User: 'i dont care'
System: 'Can I help you with anything else?'
User: 'venue'
System: 'There is no restaurant in the Newnham area in the expensive price range.'
User: 'in the trumpington area'
System: 'Would you like an expensive price range, or you don't care?'
User: 'expensive'
System: 'Are you looking for somewhere near a particular venue? For example, the Botanic Garden, Clare Hall, or Queens' College.'
User: 'no'
System: 'The Oak Bistro, which is in the Trumpington part of town, is an outstanding restaurant. It's in the expensive price range.'
User: 'address and price'
System: 'The Oak Bistro is located on 6 Lensfield Road. The price for main courses ranges from 11 pounds 50 to 17 pounds 75.'
User: 'thank you good bye'


SOLUTION:
Expensive