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: 'im looking for a moderately priced restaurant in the fen ditton area'
System: 'What type of food would you like? For example, Chinese take away, Middleeastern, or Vegetarian.'
User: 'ah chinese'
System: 'Are you looking for somewhere near a particular venue? For example, All Saints Church, Downing College, or Wandlebury Country Park.'
User: 'fen ditton'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or central area.'
User: 'the fen ditton area'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Girton, or Trumpington area.'
User: 'thank you good bye'

[EX A]: Moderate

[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: 'restaurant'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'moderately priced'
System: 'What type of food would you like? For example, Northern european, American, or Mediterranean.'
User: 'fen ditton area'
System: 'Can I help you with anything else?'
User: 'fen ditton area'
System: 'Are you looking for somewhere near a particular venue? For example, Hughes Hall, the Museum of Archaelogy and Anthropology, or Queens' College.'
User: 'fen ditton'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Northern european, or Indian.'
User: 'area'
System: 'What type of food would you like? For example, pub, Fusion, or Seafood.'
User: 'mexican'
System: 'There is no restaurant serving mexican and tex mex food in the moderate price range.'
User: 'mexican'
System: 'There is no restaurant serving mexican and tex mex food in the moderate price range.'
User: 'fen ditton area'
System: 'Would you like a moderate price range, or you don't care?'
User: 'moderate'
System: 'There is no restaurant in the Girton area and serving mexican and tex mex food.'
User: 'fen ditton'
System: 'Would you like a mexican and tex mex food, or you don't care?'
User: 'fen ditton area'
System: 'Would you like a mexican and tex mex food, or you don't care?'
User: 'i dont care'
System: 'The Rainbow Cafe, which is in the Girton part of town, is an outstanding restaurant. It's in the moderate price range.'
User: 'address'
System: 'The Rainbow Cafe is located on 9a King's Parade. The price for main courses ranges from 7 pounds 95 to 10 pounds 95 and the price for a cappuccino is 1 pound 75.'
User: 'phone number'
System: 'The phone number of the Rainbow Cafe is 01223321551.'
User: 'thank you good bye'

[EX A]: Moderate

[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: 'system'
System: 'Are you looking for a venue with a television?'
User: 'system'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'no for pub food'
System: 'Are you looking for a venue with an internet connection?'
User: 'cheap pub food'
System: 'Are you looking for a venue that allows children?'
User: 'no'
System: 'Are you looking for a venue with an internet connection?'
User: 'no'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
User: 'system'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
User: 'system'
System: 'The Baron of Beef is an outstanding pub and it's in the cheap price range.'
User: 'thank you goodbye'
System: 'The Baron of Beef, which is in the cheap price range, is a great pub.'
User: 'thank you goodbye'

[EX A]:
Cheap

