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: 'i want to find a northern european restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, the Gallery at twelve A High Street, the Michaelhouse Centre, or Sidney Sussex College.'
User: 'background noise'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'cheap'
System: 'Polonia is a great restaurant and it serves northern european food. It's in the cheap price range.'
User: 'what is the address'
System: 'Polonia is on 231 Chesterton Road.'
User: 'what is the phone number'
System: 'The phone number of Polonia is 01223902138.'
User: 'what is the postcode'
System: 'Polonia is in the area with the postcode CB4 1AS.'
User: 'thank you good bye'


SOLUTION: Cheap

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 thia restaurant i dont care about the price'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'a thia restaurant'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'doesnt matter'
System: 'The Wrestlers is a great restaurant and it serves thai food.'
User: 'what is the address and area'
System: 'The Wrestlers is on 337 Newmarket Road and its phone number is 01223566554.'
User: 'what is its area'
System: 'The Wrestlers is in the riverside 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: 'hi im looking for a pub food restaurant and it should have moderate price range'
System: 'What part of town do you have in mind? For example, Fen Ditton, or riverside.'
User: 'i dont care'
System: 'The Lion and Lamb, which serves pub food, is an outstanding restaurant. It's in the moderate price range.'
User: 'can i get the address and the phone number'
System: 'The Lion and Lamb is on High Street, Milton and its phone number is 01223860202.'
User: 'alright thank you good bye'
System: 'The Lion and Lamb, which serves pub food, is a great restaurant. It's in the moderate price range.'
User: 'alright thank you good bye'


SOLUTION:
Moderate