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 an expensive seafood restaurant'
System: 'Loch Fyne, which serves seafood, is an outstanding restaurant. It's in the expensive price range.'
User: 'what is the address and phone number'
System: 'Loch Fyne is located on 37 Trumpington Street and its phone number is 01223902103.'
User: 'what is the cost'
System: 'Loch Fyne is in the riverside part of town.'
User: 'how much does it cost'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
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: 'alright'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'seafood restaurant'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Girton, or Trumpington area.'
User: 'none'
System: 'Loch Fyne is an outstanding restaurant and it serves seafood.'
User: 'is it expensive'
System: 'Loch Fyne is 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: 'what is the price of the venue'
System: 'Loch Fyne is an outstanding venue. 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: 'ya hi ah i want to find a fusion restaurant'
System: 'What type of food would you like? For example, Fastfood, Mediterranean, or Turkish.'
User: 'ah fast food and it should have been in the cheap price range'
System: 'Burger King is an outstanding restaurant, it serves fastfood and it's in the cheap price range.'
User: 'can i have an address and phone number'
System: 'Burger King is on The Grafton Centre. Its phone number is 01223322666. The price for main courses ranges from 1 pound 99 to 6 pounds 79.'
User: 'ah and can i have a area of the venue'
System: 'Burger King is a great restaurant.'
User: 'ah thank you good bye'


SOLUTION:
Cheap