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: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe.'
User: 'sil'
System: 'What kind of venue are you looking for? For example, a cafe.'
User: 'im looking for a cheap restaurant'
System: 'What type of food would you like? For example, American, Contemporary, or Italian.'
User: 'restaurant'
System: 'What type of food would you like? For example, Indian, Mediterranean, or Turkish.'
User: 'restaurant'
System: 'What type of food would you like? For example, Cafe food, Contemporary, or Japanese.'
User: 'contemporary'
System: 'All Bar One, which serves contemporary food, is an outstanding restaurant. It's in the cheap price range.'
User: 'is it in the fen ditton area'
System: 'Are you looking for somewhere near a particular venue? For example, Christ's College, the Gallery at twelve A High Street, or Gonville and Caius College.'
User: 'fen ditton area'
System: 'All Bar One is the only restaurant in the cheap price range that serves contemporary food.'
User: 'what is the phone number'
System: 'The phone number of All Bar One is 01223371081.'
User: 'what is the address'
System: 'All Bar One is on 36 Saint Andrews Street.'
User: 'thank you good bye'

[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: 'sil'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'sil'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'moderate'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'dont care'
System: 'What kind of venue are you looking for? For example, a restaurant.'
User: 'vegetarian restaurant'
System: 'The Rainbow Cafe, which serves traditional and vegetarian food, is a great restaurant. It's in the moderate price range.'
User: 'restaurant'
System: 'The Rainbow Cafe, which serves traditional and vegetarian food, is an outstanding restaurant. It's in the moderate price range.'
User: 'what is the phone number and price of the venue'
System: 'The phone number of the Rainbow Cafe is 01223321551. 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: 'what is the phone number'
System: 'The phone number of the Rainbow Cafe is 01223321551.'
User: 'thank you have a good day'
System: 'Can I help you with anything else?'
User: 'sil'
System: 'Can I help you with anything else?'
User: 'sil'
System: 'The Rainbow Cafe is a great restaurant.'
User: 'thank you have a good day'

[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 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'

[EX A]:
Moderate