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: 'i am looking for an expensive restaurant in a castle hill area'
System: 'Are you looking for somewhere near a particular venue? For example, Jesus College, the Saint Barnabas Press Gallery, or the Whipple Museum of the History of Science.'
User: 'castle hill area'
System: 'Are you looking for somewhere near a particular venue? For example, Downing College, Emmanuel College, or Queens' College.'
User: 'unintelligible castle hill'
System: 'What part of town do you have in mind? For example, Fen Ditton, or Newnham.'
User: 'castle hill'
System: 'What part of town do you have in mind? For example, something in the Arbury, Chesterton, or central area.'
User: 'breathing sil'
System: 'What type of food would you like? For example, Cafe food, Northern european, or pub.'
User: 'breathing sil'
System: 'What type of food would you like? For example, American, or Italian.'
User: 'expensive restaurant'
System: 'What type of food would you like? For example, pub, American, or Contemporary.'
User: 'italian'
System: 'Would you like vegetarian or X food?'
User: 'italian food coughing'
System: 'Blue Spice, which is in the expensive price range, is a great restaurant.'
User: 'vegetarian'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'sil'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'in what area'
System: 'Blue Spice is in the Girton part of town.'
User: 'breathing looking for a restaurant in castle hill'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'coughing sil'
System: 'Can I help you with anything else?'
User: 'breathing sil'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'i am looking for an expensive restaurant in the castle hill area'
System: 'The Hotel du Vin is a great restaurant and it's in the expensive price range.'
User: 'do you have a restaurant in castle hill'
System: 'There is no restaurant serving vegetarian food in the expensive price range.'
User: 'where is it located'
System: 'The Hotel du Vin is located on 15-19 Trumpington Street.'
User: 'do you have a restaurant in castle hill'
System: 'Would you like a vegetarian food, or you don't care?'
User: 'yes'
System: 'Would you like a vegetarian food, or you don't care?'
User: 'thank you good bye'

Example Output: Expensive

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: 'a thai restaurant and it should have a moderate price range'
System: 'Bangkok City, which serves thai food, is a great restaurant. It's in the moderate price range.'
User: 'alright please give me the phone number and the area'
System: 'The phone number of Bangkok City is 01223354382.'
User: 'and the area please'
System: 'Bangkok City is in the central part of town.'
User: 'alright thank you good bye'

Example Output: Moderate

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: 'american restaurant'
System: 'What kind of price range are you looking for? For example, free.'
User: 'i dont care'
System: 'Are you looking for somewhere near a particular venue? For example, Magdalene College, the People's Portraits Exhibition, or the Saint Barnabas Press Gallery.'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or King's Hedges area.'
User: 'i dont care'
System: 'What type of food would you like? For example, Northern european, Chinese, or Thai.'
User: 'american'
System: 'What type of food would you like? For example, Indian, Seafood, or Traditional.'
User: 'american'
System: 'What type of food would you like? For example, Chinese, Continental, or International.'
User: 'thank you good bye'
System: 'What type of food would you like? For example, Contemporary, International, or Italian.'
User: 'thank you good bye'

Example Output:
Don't Care