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.

[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 cafe, a pub, or a restaurant.'
User: 'restaurant'
System: 'What type of food would you like? For example, Mexican and Tex Mex, Fastfood, or Vegetarian.'
User: 'sil'
System: 'What type of food would you like? For example, Continental, Indian, or Thai.'
User: 'continental'
System: 'What part of town do you have in mind? For example, Castle Hill, or King's Hedges.'
User: 'continental'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Cherry Hinton, or King's Hedges area.'
User: 'expensive price range'
System: 'Alimentum, which serves continental and french food, is a great restaurant. It's in the expensive price range.'
User: 'dont know'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, Old Schools, or Pembroke College.'
User: 'address'
System: 'Alimentum is on 152-154 Hills Road. The price for main courses ranges from 17 pounds 50 to 21 pounds and the price for a glass of wine ranges from 6 pounds 50 to 10 pounds 50.'
User: 'phone number'
System: 'The phone number of Alimentum is 01223413000.'
User: 'postcode'
System: 'Alimentum is in the area with the postcode CB2 8PB.'
User: 'thank you goodbye'

[A]: Expensive


[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 unintelligible'
System: 'Are you looking for a venue that allows children?'
User: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'no breathing thank you good bye thank you good bye thank you good bye'
System: 'Are you looking for a venue with a television?'
User: 'thank you good bye'

[A]: Expensive


[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: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a restaurant.'
User: 'unintelligible'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'restaurant in the fen ditton area restaurant in the fen ditton area'
System: 'Are you looking for a venue in the Fen Ditton or Girton area?'
User: 'restaurant in the fen ditton area'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'restaurant in the fen ditton'
System: 'Twenty-four is an outstanding restaurant and it's in the Chesterton part of town.'
User: 'sil'
System: 'Are you looking for a venue in the Chesterton or Fen Ditton area?'
User: 'sil'
System: 'Are you looking for a venue in the Chesterton or Fen Ditton area?'
User: 'fen ditton'
System: 'Twenty-four is an outstanding restaurant.'
User: 'fen ditton'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Cherry Hinton, or Newnham area.'
User: 'sil'
System: 'Are you looking for a venue in the Chesterton or Girton area?'
User: 'thank you good bye'

[A]:
Cheap