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 Q]: 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: 'breathing unintelligible'
System: 'Are you looking for a venue that allows children?'
User: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'no breathing thank you good bye thank you good bye thank you good bye'
System: 'Are you looking for a venue with a television?'
User: 'thank you good bye'

[EX A]: Expensive

[EX Q]: 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 A]: Expensive

[EX Q]: 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: 'moderately priced restaurant new chesterton area'
System: 'Hakka, which is in the New Chesterton part of town, is a great restaurant. It's in the moderate price range.'
User: 'noise'
System: 'Hakka, which is in the New Chesterton part of town, is a great restaurant. It's in the moderate price range.'
User: 'noise'
System: 'What type of food would you like? For example, Cafe food, or Italian.'
User: 'address'
System: 'Hakka is on 24 Milton Road.'
User: 'price'
System: 'Hakka is a great venue. The price for main courses ranges from 5 pounds to 13 pounds.'
User: 'thank you goodbye'

[EX A]:
Moderate