Instructions: 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: 'cough'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, free.'
User: 'cheap'
System: 'What part of town do you have in mind? For example, Addenbrooke's, or Barnwell.'
User: 'fen ditton'
System: 'What type of food would you like? For example, Cafe food, Continental, or Middleeastern.'
User: 'any'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Chesterton, or Girton area.'
User: 'fen ditton'
System: 'Are you looking for somewhere near a particular venue? For example, Cambridge Contemporary Art, the Technology Museum, or the Lynne Strover Gallery.'
User: 'no'
System: 'What part of town do you have in mind? For example, riverside, or Romsey.'
User: 'fen ditton'
System: 'What part of town do you have in mind? For example, something in the Chesterton, Girton, or riverside area.'
User: 'sil'
System: 'What type of food would you like? For example, Chinese take away, French, or Italian.'
User: 'sil'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Fen Ditton, or Romsey area.'
User: 'any'
System: 'What part of town do you have in mind? For example, something in the New Chesterton, Newnham, or riverside area.'
User: 'fen ditton'
System: 'What type of food would you like? For example, Middleeastern, or Turkish.'
User: 'fen ditton'
System: 'What part of town do you have in mind? For example, Addenbrooke's, or Castle Hill.'
User: 'any type'
System: 'What part of town do you have in mind? For example, King's Hedges, or Newnham.'
User: 'fen ditton'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Cherry Hinton, or Fen Ditton area.'
User: 'fen ditton'
System: 'What part of town do you have in mind? For example, something in the Fen Ditton, Girton, or New Chesterton area.'
User: 'fen ditton'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, New Chesterton, or Newnham area.'
User: 'fen ditton'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Castle Hill, or King's Hedges area.'
User: 'goodbye thank you'

Output:
Cheap