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 an expensive restaurant and it should be in the trumpington area'
System: 'Would you like an expensive price range, or you don't care?'
User: 'i need expensive restaurant in the trumpington area'
System: 'Are you looking for somewhere near a particular venue? For example, Castle Galleries, or Pembroke College.'
User: 'no'
System: 'The Oak Bistro, which is in the Trumpington part of town, is a great restaurant. It's in the expensive price range.'
User: 'can i get the address phone number and the price of the venue'
System: 'The Oak Bistro is on 6 Lensfield Road and its phone number is 01223323361. The price for main courses ranges from 11 pounds 50 to 17 pounds 75.'
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 id like to find a cafe food restaurant and it should have a moderate price range'
System: 'Carringtons is a great cafe, it serves cafe food and it's an outstanding restaurant. This place, which serves english food, is in the moderate price range.'
User: 'noise i want to know the address area and phone number of the location'
System: 'Carringtons is on 23 Market Street and its phone number is 01223361792.'
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: 'an expensive'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'price range indian restaurant'
System: 'Blue Spice, which serves indian food, is an outstanding restaurant. It's in the expensive price range.'
User: 'phone number and area code'
System: 'The phone number of Blue Spice is 01223413337. The price for main courses ranges from 12 pounds 50 to 12 pounds 50.'
User: 'thank you good bye'

[EX A]:
Expensive