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: 'i want to find a coffee shop serving english foo food'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Cherry Hinton, or Girton area.'
User: 'okay and it should have a cheap price range'
System: 'The Cambridge Blue, which serves english food, is an outstanding cafe. It's in the cheap price range.'
User: 'whats the address'
System: 'The Cambridge Blue is located on 24 Regent Street. The price for main courses ranges from 1 pound 20 to 2 pounds 50 and the price for a cappuccino is 1 pound 35.'
User: 'thank you goodbye'

[EX A]: Cheap

[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: 'i am looking for a cafe'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'it doesnt matter'
System: 'Are you looking for somewhere near a particular venue? For example, Clare College, the Saint Barnabas Press Gallery, or Williams Art and Antiques.'
User: 'not really'
System: 'What type of food would you like? For example, East asian, Greek, or Seafood.'
User: 'breakfast'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, central, or Trumpington area.'
User: 'how bout trumpington'
System: 'There is no cafe in the Trumpington area.'
User: 'how bout cherry hinton'
System: 'Are you looking for a venue in the Cherry Hinton or Trumpington area?'
User: 'cherry hinton'
System: 'There is no cafe in the Cherry Hinton area.'
User: 'im looking for a cafe'
System: 'There is no cafe in the Cherry Hinton area.'
User: 'london'
System: 'Would you like a cherry hinton area, or you don't care?'
User: 'i dont care'
System: 'Would you like a moderate price range, or you don't care?'
User: 'i dont care'
System: 'What type of food would you like? For example, Northern european, Japanese, or Vegetarian.'
User: 'cafe'
System: 'What type of food would you like? For example, International, Mediterranean, or Traditional.'
User: 'traditional'
System: 'There is no cafe serving traditional food.'
User: 'thank you good 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: 'sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'restaurant'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'i dont care about the price'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'im looking for a restaurant in trumpington'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'any price'
System: 'What kind of price range are you looking for? For example, free, or moderate. I can't hear you. What kind of price range are you looking for? For example, free, or moderate.'
User: 'do you have a restaurant in trumpington'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'moderate'
System: 'What type of food would you like? For example, Mediterranean, or Thai.'
User: 'expensive'
System: 'Would you like a venue with an expensive or moderate price range?'
User: 'thai'
System: 'Would you like a venue with an expensive or moderate price range?'
User: 'moderate'
System: 'What type of food would you like? For example, Mexican and Tex Mex, French, or Traditional.'
User: 'price range'
System: 'What type of food would you like? For example, English, Thai, or Traditional.'
User: 'french food'
System: 'There is no restaurant serving french food in the moderate price range.'
User: 'english food'
System: 'There is no restaurant in the Trumpington area and serving english food.'
User: 'do you have a restaurant in trumpington'
System: 'There is no restaurant in the Trumpington area and serving english food.'
User: 'do you have mexican food'
System: 'What type of food would you like? For example, Continental, Thai, or Vegetarian.'
User: 'do you have mexican food in trumpington'
System: 'There is no restaurant serving mexican and tex mex food in the moderate price range.'
User: 'vegetarian'
System: 'Would you like a moderate price range, or you don't care?'
User: 'do you have uh cheap price range'
System: 'There is no restaurant serving mexican and tex mex food in the cheap price range.'
User: 'yeah'
System: 'Would you like a venue with a cheap or moderate price range?'
User: 'goodbye'

[EX A]:
Don't Care