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 venue are you looking for? For example, a pub, or a restaurant.'
User: 'can i have a cheap restaurant in the fen ditton area'
System: 'There is no restaurant in the Trumpington area in the cheap price range.'
User: 'how about in fen ditton'
System: 'The Milton Park English and Thai Restaurant is an outstanding restaurant, it's in the Fen Ditton part of town and it's in the cheap price range.'
User: 'can i have the address please'
System: 'The Milton Park English and Thai Restaurant is on Milton Park Golf Course, Ely Road, Milton.'
User: 'can i have the phone number please'
System: 'The phone number of the Milton Park English and Thai Restaurant is 01223864602.'
User: 'thank you goodbye'


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: 'i am looking for a sea food restaurant with expensive price range pricing'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
User: 'can you give the address and the area of this restaurant'
System: 'Loch Fyne is on 37 Trumpington Street. The price for main courses ranges from 9 pounds to 20 pounds.'
User: 'unintelligible the area of this venue'
System: 'Loch Fyne is in the riverside part of town.'
User: 'ok 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: 'sil'
System: 'Can I help you with anything else?'
User: 'im looking for a chinese takeaway restaurant in a cheap price range'
System: 'La Raza, which is in the cheap price range, is an outstanding restaurant.'
User: 'chinese restaurant'
System: 'The Golden Palace, which serves chinese food, is an outstanding restaurant. It's in the cheap price range.'
User: 'what is the phone number and price of the venue'
System: 'The Golden Palace is located on 19 Hatter Street and its phone number is 01284754311. The price for main courses ranges from 2 pounds 20 to 5 pounds 50.'
User: 'is it a chinese takeaway restaurant'
System: 'The Golden Palace, which serves chinese food, is a great restaurant. It's in the cheap price range.'
User: 'thank you goodbye'


SOLUTION:
Cheap