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 contemporary restaurant'
System: 'Let me confirm. You are looking for a contemporary venue.'
User: 'and it should have a cheap price range'
System: 'All Bar One, which serves contemporary food, is an outstanding restaurant. It's in the cheap price range.'
User: 'can you give me the phone number and the price of the venue'
System: 'The phone number of All Bar One is 01223371081. The price for main courses ranges from 7 pounds 95 to 12 pounds 95 and the price for a glass of wine ranges from 2 pounds 85 to 6 pounds 95.'
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 japanese restaurant in the moderate price range'
System: 'Yippee Noodle Bar is an outstanding restaurant. It serves chinese take away and japanese food. It's in the moderate price range.'
User: 'whats the price of it'
System: 'Yippee Noodle Bar is a great venue. The price for main courses ranges from 7 pounds 30 to 11 pounds 40.'
User: 'whats 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: 'i am looking for a pub it should have a television'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'i dont care about the price range'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'i do not care'
System: 'Let me confirm. You don't care about the price range and you are looking for a venue.'
User: 'yes'
System: 'Carringtons is a great cafe. It's an outstanding restaurant.'
User: 'does it have a television'
System: 'Carringtons is a great cafe and an outstanding restaurant.'
User: 'whats the address and the phone number'
System: 'Carringtons is on 23 Market Street, its phone number is 01223361792 and it's in the moderate price range. The price for main courses ranges from 4 pounds 25 to 6 pounds 25 and the price for a cappuccino is 1 pound 95.'
User: 'thank you good bye'


SOLUTION:
Don't Care