Teacher: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.
Teacher: Now, understand the problem? Solve this instance: 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: 'unintelligible northern european in a cheap price range'
System: 'Polonia, which serves northern european food, is a great restaurant. It's in the cheap price range.'
User: 'whats the address'
System: 'Polonia is on 231 Chesterton Road. The price for main courses ranges from 1 pound 50 to 7 pounds 50.'
User: 'whats the phone number'
System: 'The phone number of Polonia is 01223902138.'
User: 'whats the price range'
System: 'Polonia is in the cheap price range.'
User: 'and whats the post code'
System: 'Polonia is in the area with the postcode CB4 1AS.'
User: 'thank you good bye'

Student:
Cheap