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 texmex restaurant'
System: 'Nanna Mexico, which serves mexican and tex mex food, is a great restaurant. It's in the expensive price range.'
User: 'knock sil'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, the Gallery at twelve A High Street, or Milton Country Park.'
User: 'anywhere'
System: 'Nanna Mexico is on 33 Regent Street.'
User: 'what is the phone number'
System: 'The phone number of Nanna Mexico is 01223902150.'
User: 'click sil'
System: 'Nanna Mexico is a great restaurant.'
User: 'what is the phone number and price'
System: 'The phone number of Nanna Mexico is 01223902150. The price for main courses ranges from 5 pounds 35 to 15 pounds 50 and the price for a cappuccino is 2 pounds 95.'
User: 'is it expensive'
System: 'Nanna Mexico is in the expensive price range.'
User: 'sil'
System: 'Nanna Mexico is a great restaurant.'
User: 'sil'
System: 'Nanna Mexico is an outstanding restaurant.'
User: 'is it expensive'
System: 'Nanna Mexico is in the expensive price range.'
User: 'breathing is it e'
System: 'Nanna Mexico is an outstanding restaurant.'
User: 'thank you good bye'

[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: 'i want a drinks and snacks only restaurant'
System: 'The Fleur, which serves drinks and snacks, is an outstanding restaurant.'
User: 'what is the address'
System: 'The Fleur is located on 73 Humberstone Road.'
User: 'what is the phone number and area'
System: 'The phone number of The Fleur is 01223902183.'
User: 'what is the area'
System: 'The Fleur is in the riverside part of town.'
User: 'thank you good bye'

[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: 'im looking for a moderately priced restaurant in the chesterton area'
System: 'Twenty-four, which is in the Chesterton part of town, is a great restaurant. It's in the moderate price range.'
User: 'may i have the phone number and address'
System: 'Twenty-four is on 24 Cambridge Science Park, Milton Road and its phone number is 01223395800.'
User: 'thank you goodbye'

[EX A]:
Moderate

