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 need an expensive restaurant in the addenbrookes area'
System: 'Would you like a venue with a cheap or expensive price range?'
User: 'expensive'
System: 'What type of food would you like? For example, Cafe food, or Fusion.'
User: 'fusion'
System: 'Would you like a venue with an expensive pricerange or with no entrance fee?'
User: 'expensive'
System: 'What type of food would you like? For example, East asian, Fusion, or Spanish.'
User: 'fusion'
System: 'What type of food would you like? For example, International, Spanish, or Turkish.'
User: 'international'
System: 'There is no restaurant in the Addenbrooke's area and serving international food.'
User: 'fusion'
System: 'Would you like an addenbrooke's area, or you don't care?'
User: 'addenbrookes'
System: 'Would you like an international food, or you don't care?'
User: 'i dont care'
System: 'What part of town do you have in mind? For example, something in the central, Romsey, or Trumpington area.'
User: 'addenbrookes'
System: 'What part of town do you have in mind? For example, something in the central, Newnham, or Trumpington area.'
User: 'central'
System: 'Blue Spice, which is in the expensive price range, is an outstanding restaurant.'
User: 'thank you goodbye'

[EX A]: Expensive

[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: 'yes im looking for an italian restaurant'
System: 'Let me confirm. You are looking for an italian venue.'
User: 'yes'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'expensive'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'expensive'
System: 'Are you looking for somewhere near a particular venue? For example, Jesus College, Saint Catharine's College, or Trinity College.'
User: 'dont care'
System: 'The Sorrento is a great restaurant, it serves italian food and it's in the expensive price range.'
User: 'whats the address'
System: 'The Sorrento is located on 196 Cherry Hinton Road.'
User: 'whats the phone number'
System: 'The phone number of The Sorrento is 01223243533.'
User: 'whats the postcode'
System: 'The Sorrento is in the area with the postcode CB1 7AN.'
User: 'thank you good bye'

[EX A]: Expensive

[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: 'breathing sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'breathing sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'noise restaurant traditional restaurant'
System: 'What kind of price range are you looking for? For example, expensive, free, or moderate.'
User: 'traditional restaurant'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'moderate'
System: 'What part of town do you have in mind? For example, Barnwell, or Romsey.'
User: 'noise moderate noise'
System: 'What part of town do you have in mind? For example, something in the Arbury, Girton, or King's Hedges area.'
User: 'breathing sil'
System: 'Are you looking for somewhere near a particular venue? For example, the Botanic Garden, Gonville and Caius College, or Hughes Hall.'
User: 'romsey romsey'
System: 'There is no restaurant in the Romsey area and serving traditional food.'
User: 'unintelligible'
System: 'Would you like traditional or X food?'
User: 'noise sil'
System: 'Would you like traditional or X food?'
User: 'thank you good bye'

[EX A]:
Moderate