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: 'yes im looking for a cheap chinese take away restaurant'
System: 'Saigon City, which serves chinese take away, is a great restaurant. It's in the cheap price range.'
User: 'may i get the address'
System: 'Saigon City is on 169 High Street, Chesterton.'
User: 'may i have the phone number'
System: 'The phone number of Saigon City is 01223356555.'
User: 'may i get the postal code of the venue'
System: 'Saigon City is in the area with the postcode CB4 1NL.'
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 japanese restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Clare Hall, the Saint Barnabas Press Gallery, or Saint John's College.'
User: 'with moderate pricing i want to know the address and postcode'
System: 'Yippee Noodle Bar, which serves chinese take away and japanese food, is a great restaurant. It's in the moderate price range.'
User: 'what is the address and postcode'
System: 'Yippee Noodle Bar, which is in the area with the postcode CB1 1LH, is on 7-9 King Street.'
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: 'i am looking for a contemporary restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, the Museum Of Technology, the University Botanic Gardens, or Primavera.'
User: 'with a cheap price range'
System: 'All Bar One, which serves contemporary food, is a great restaurant. It's in the cheap price range.'
User: 'what is the phone number and price of the venue'
System: 'The phone number of All Bar One is 01223371081. The price for main courses ranges from 7 pounds 95 to 12 pounds 95 and the price for a glass of wine ranges from 2 pounds 85 to 6 pounds 95.'
User: 'background noise'
System: 'All Bar One is an outstanding restaurant.'
User: 'what is the unintelligible of the venue'
System: 'The phone number of All Bar One is 01223371081.'
User: 'thank you good bye'

[EX A]:
Cheap