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: 'sil'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'i dont care'
System: 'What kind of venue are you looking for? For example, a pub.'
User: 'i dont care'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'anything'
System: 'Are you looking for a pub or a restaurant?'
User: 'restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Cherry Hinton Water Play, Old Schools, or the People's Portraits Exhibition.'
User: 'anyth'
System: 'What part of town do you have in mind? For example, something in the Arbury, Fen Ditton, or riverside area.'
User: 'riverside'
System: 'What type of food would you like? For example, French, International, or Turkish.'
User: 'international'
System: 'Let me confirm. You are looking for an international venue.'
User: 'correct'
System: 'There is no restaurant in the riverside area and serving international food.'
User: 'well somewhere else then'
System: 'There is no restaurant in the riverside area and serving international food.'
User: 'somewhere else'
System: 'Would you like a riverside area, or you don't care?'
User: 'i dont care'
System: 'Would you like an international food, or you don't care?'
User: 'international food'
System: 'Giraffe, which serves international food, is a great restaurant. I can't hear you. Giraffe, which serves international food, is a great restaurant.'
User: 'thats good'
System: 'Can I help you with anything else?'
User: 'address please'
System: 'Giraffe is on Christ's Lane.'
User: 'sil'
System: 'Giraffe is an outstanding restaurant.'
User: 'address please'
System: 'Giraffe is located on Christ's Lane.'
User: 'sil'
System: 'Giraffe is an outstanding restaurant.'
User: 'phone number'
System: 'The phone number of Giraffe is 01223300707.'
User: 'address please'
System: 'Giraffe is on Christ's Lane.'
User: 'thank you bye'

[EX A]: 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: 'im looking for a cafe food restaurant and it should have a cheap price range'
System: 'Subway, which serves cafe food, is an outstanding restaurant. It's in the cheap price range.'
User: 'i want to know the phone number and the area its in'
System: 'The phone number of Subway is 01223461323. The price for main courses ranges from 1 pound 99 to 5 pounds 60.'
User: 'thank you good bye'

[EX A]:
Cheap