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.

Example 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: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'coffee shop serving italian food'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or Trumpington area.'
User: 'i dont care'
System: 'Caffe Nero, which serves italian food, is a great cafe.'
User: 'cheap price range'
System: 'Caffe Nero is a great venue. The price for main courses ranges from 3 pounds 50 to 3 pounds 85 and the price for a cappuccino is 2 pounds 15.'
User: 'address'
System: 'Caffe Nero is located on 11 Market Street.'
User: 'phone number'
System: 'The phone number of Caffe Nero is 01223307728.'
User: 'whats the area'
System: 'I am sorry but there is no information on Caffe Nero's area.'
User: 'what part of town'
System: 'I am sorry but there is no information on Caffe Nero's area.'
User: 'background noise'
System: 'Caffe Nero is a great cafe.'
User: 'thank you good bye'

Example Output: Cheap

Example 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: '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'

Example Output: Don't Care

Example 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: 'looking for an expensive restaurant in trumpington'
System: 'Are you looking for somewhere near a particular venue? For example, Artspace, Wandlebury Country Park, or Primavera.'
User: 'trumpington area'
System: 'What type of food would you like? For example, pub, American, or Thai.'
User: 'american'
System: 'What type of food would you like? For example, Chinese take away, Middleeastern, or Vegetarian.'
User: 'expensive chinese food'
System: 'Wok n Grill, which is in the Trumpington part of town, is a great restaurant. This place, which serves chinese food, is in the expensive price range.'
User: 'what is the address'
System: 'Wok n Grill is located on 18 High Street, Trumpington.'
User: 'thank you goodbye'

Example Output:
Expensive