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.

Ex Input:
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 would like to find a greek restaurant i need the phone number and the price'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'i dont care about the price range'
System: 'What kind of price range are you looking for? For example, cheap, 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: 'any'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'none'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'free'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'free'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'thank you goodbye'


Ex Output:
Don't Care


Ex Input:
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: 'system'
System: 'Are you looking for a venue with a television?'
User: 'end of system audio no im looking for a seafood restaurant'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'system'
System: 'Are you looking for a venue that allows children?'
User: 'an expensive restaurant system audio simultaneous'
System: 'Would you like other or true children?'
User: 'no'
System: 'Would you like true children, or you don't care?'
User: 'and expensive seafood restaurant system audio simultaneous'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
User: 'i do not care'
System: 'Loch Fyne, which serves seafood, is a great restaurant. It's in the expensive price range.'
User: 'thank you'
System: 'Can I help you with anything else?'
User: 'system thank you good bye'


Ex Output:
Expensive


Ex Input:
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: 'knock sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'expensive english restaurant'
System: 'Would you like turkish or X food?'
User: 'english'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'expensive'
System: 'Would you like an expensive price range, or you don't care?'
User: 'yes'
System: 'Would you like an expensive price range, or you don't care?'
User: 'expensive'
System: 'The Backstreet Bistro, which serves contemporary and english food, is an outstanding restaurant. It's in the expensive price range.'
User: 'can i have the address'
System: 'The Backstreet Bistro is located on 2 Sturton Street.'
User: 'can i have the phone number'
System: 'The phone number of the Backstreet Bistro is 01223306306.'
User: 'can i have the post code'
System: 'The Backstreet Bistro is in the area with the postcode CB1 2QA.'
User: 'thank you good bye'


Ex Output:

Expensive