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: 'yes im looking for an expensive restaurant in the romsey area'
System: 'The Backstreet Bistro, which is in the Romsey part of town, is a great restaurant. It's in the expensive price range.'
User: 'whats the address'
System: 'The Backstreet Bistro is on 2 Sturton Street.'
User: 'whats the price'
System: 'The Backstreet Bistro is a great venue. The price for main courses ranges from 10 pounds 95 to 14 pounds 25.'
User: 'thank you goodbye'


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 pub food restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'english restaurant with a moderate price range'
System: 'What part of town do you have in mind? For example, New Chesterton, or Romsey.'
User: 'i dont care the location'
System: 'The Lion and Lamb is a great restaurant, it serves pub food and it's in the moderate price range.'
User: 'can i get the address the phone number'
System: 'The Lion and Lamb is located on High Street, Milton and its phone number is 01223860202.'
User: 'and the price of the venue'
System: 'The Lion and Lamb is an outstanding venue. The price for main courses ranges from 5 pounds to 15 pounds and the price for a cheapest pint of beer is 3 pounds.'
User: 'can i get the address and phone number'
System: 'The Lion and Lamb is located on High Street, Milton and its phone number is 01223860202.'
User: 'background noise'
System: 'The Lion and Lamb is an outstanding restaurant.'
User: 'can i get the address'
System: 'The Lion and Lamb is on High Street, Milton.'
User: 'can i get the phone number'
System: 'The phone number of The Lion and Lamb is 01223860202.'
User: 'background noise'
System: 'The Lion and Lamb is a great restaurant.'
User: 'can i get the phone number'
System: 'The phone number of The Lion and Lamb is 01223860202.'
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 moderately priced restaurant in the fen ditton area'
System: 'The Lion and Lamb, which is in the Fen Ditton part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'may i have the phone number and address of the lion and lamb'
System: 'The Lion and Lamb is on High Street, Milton. Its phone number is 01223860202.'
User: 'thank you and goodbye'


SOLUTION:
Moderate