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 seafood restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Clare Hall, Magdalene College, or the People's Portraits Exhibition.'
User: 'background noise'
System: 'Loch Fyne is a great restaurant and it serves seafood.'
User: 'is it expensive'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
User: 'what is the address'
System: 'Loch Fyne is on 37 Trumpington Street.'
User: 'what is the phone number'
System: 'The phone number of Loch Fyne is 01223902103.'
User: 'how much does it cost'
System: 'Loch Fyne is a great restaurant. The price for main courses ranges from 9 pounds to 20 pounds.'
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, or free.'
User: 'doesnt matter'
System: 'Carringtons is a great cafe and an outstanding restaurant. It serves cafe food and english food.'
User: 'what is the address and area'
System: 'Carringtons is on 23 Market Street.'
User: 'noise sil'
System: 'Carringtons is an outstanding restaurant.'
User: 'what is the address'
System: 'Carringtons is on 23 Market Street.'
User: 'in what area is herrington'
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: 'no'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'a moderately priced restaurant in the barnwell area'
System: 'The Wheatsheaf, which is in the Barnwell part of town, is a great restaurant. It's in the moderate price range.'
User: 'whats the phone number'
System: 'The phone number of the Wheatsheaf is 01223812196.'
User: 'what the price range'
System: 'The Wheatsheaf is in the moderate price range.'
User: 'what type of food do they have'
System: 'The Wheatsheaf serves traditional food.'
User: 'thank you goodbye'


SOLUTION:
Moderate