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: 'sil'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'an italian restaurant'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'i dont care'
System: 'Are you looking for somewhere near a particular venue? For example, the Gallery at twelve A High Street, the Regency Gallery, or the Saint Barnabas Press Gallery.'
User: 'i would like a japanese restaurant moderately priced'
System: 'Would you like a moderate price range, or you don't care?'
User: 'in moderate price range'
System: 'Would you like japanese or X food?'
User: 'japanese'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, the Gallery at twelve A High Street, or Little Saint Mary's.'
User: 'no'
System: 'Yippee Noodle Bar, which serves chinese take away, is an outstanding restaurant. It serves japanese food and it's in the moderate price range.'
User: 'may i have the address and phone number'
System: 'Yippee Noodle Bar is located on 7-9 King Street and its phone number is 01223518111.'
User: 'what area is it in'
System: 'Yippee Noodle Bar is in the central part of town.'
User: 'may i have the phone number'
System: 'The phone number of Yippee Noodle Bar is 01223518111.'
User: 'thank you goodbye'


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: 'a thai restaurant expensive price range'
System: 'The Wrestlers is a great restaurant, it serves thai food and it's in the expensive price range.'
User: 'address and postcode'
System: 'The Wrestlers is located on 337 Newmarket Road and it's in the area with the postcode CB5 8JE. 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 and the postcode'
System: 'The Wrestlers is in the area with the postcode CB5 8JE.'
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 a moderately priced restaurant in the new chesterton area'
System: 'Hakka, which is in the New Chesterton part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'id like to know the phone number and price'
System: 'The phone number of Hakka is 01223568988. The price for main courses ranges from 5 pounds to 13 pounds.'
User: 'thank you good bye'


SOLUTION:
Moderate