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, a pub, or a restaurant.'
User: 'coffee shop serving italian food'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Barnwell, or Trumpington area.'
User: 'i dont care'
System: 'Caffe Nero, which serves italian food, is a great cafe.'
User: 'cheap price range'
System: 'Caffe Nero is a great venue. The price for main courses ranges from 3 pounds 50 to 3 pounds 85 and the price for a cappuccino is 2 pounds 15.'
User: 'address'
System: 'Caffe Nero is located on 11 Market Street.'
User: 'phone number'
System: 'The phone number of Caffe Nero is 01223307728.'
User: 'whats the area'
System: 'I am sorry but there is no information on Caffe Nero's area.'
User: 'what part of town'
System: 'I am sorry but there is no information on Caffe Nero's area.'
User: 'background noise'
System: 'Caffe Nero is a great cafe.'
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: 'im looking for a cheap coffee shop'
System: 'What type of food would you like? For example, East asian, English, or Japanese.'
User: 'any kind'
System: 'What part of town do you have in mind? For example, Newnham, or riverside.'
User: 'it doesnt matter'
System: 'Are you looking for somewhere near a particular venue? For example, Artspace, the Museum Of Technology, or Hughes Hall.'
User: 'no'
System: 'The Cambridge Blue, which is in the cheap price range, is an outstanding cafe.'
User: 'what is the phone number and postcode'
System: 'The phone number of the Cambridge Blue is 01223369222 and it's in the area with the postcode CB2 1DB.'
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: 'im looking for an expensive restaurant and it should be in the addenbrookes area'
System: 'Are you looking for somewhere near a particular venue? For example, Sidney Sussex College, Williams Art and Antiques, or Primavera.'
User: 'i dont care'
System: 'The Lucky Star is an outstanding restaurant, it's in the Addenbrooke's part of town and it's in the expensive price range.'
User: 'whats the address'
System: 'The Lucky Star is on Unit.'
User: 'what type of food'
System: 'The Lucky Star serves chinese food.'
User: 'thank you good bye'

[EX A]:
Expensive