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.
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, cheap, or free.'
User: 'english restaurant'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the Fen Ditton, Newnham, or Trumpington area.'
User: 'yes'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Fen Ditton, or Romsey area.'
User: 'sil'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Castle Hill, or Trumpington area.'
User: 'the whats the phone number'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, King's Hedges, or New Chesterton area.'
User: 'sil'
System: 'Are you looking for somewhere near a particular venue? For example, Corpus Christi, Little Saint Mary's, or the Regency Gallery.'
User: 'addenbrookes'
System: 'What part of town do you have in mind? For example, something in the Arbury, Cherry Hinton, or central area.'
User: 'new chesterton'
System: 'What part of town do you have in mind? For example, something in the New Chesterton, riverside, or Romsey area.'
User: 'yes'
System: 'What part of town do you have in mind? For example, Castle Hill, or riverside.'
User: 'new ches'
System: 'What part of town do you have in mind? For example, something in the Arbury, King's Hedges, or New Chesterton area.'
User: 'castle hill'
System: 'What part of town do you have in mind? For example, something in the Arbury, Barnwell, or Chesterton area.'
User: 'arbury area'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, central, or New Chesterton area.'
User: 'thanks goodbye'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Chesterton, or Fen Ditton area.'
User: 'thank you bye'
System: 'What part of town do you have in mind? For example, something in the Arbury, Chesterton, or Romsey area.'
User: 'unintelligible'
System: 'What part of town do you have in mind? For example, something in the Chesterton, Girton, or riverside area.'
User: 'thank you and goodbye'

Output:
Don't Care