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: 'sil'
System: 'What kind of venue are you looking for? For example, a restaurant.'
User: 'continental restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'expensive'
System: 'Are you looking for somewhere near a particular venue? For example, King's College, Old Schools, or Trinity College.'
User: 'dont care'
System: 'Let me confirm. You don't care about the location and you are looking for a venue.'
User: 'yes'
System: 'Alimentum is an outstanding restaurant, it serves continental and french food and it's in the expensive price range.'
User: 'i need address phone number and post code'
System: 'Alimentum, which is in the area with the postcode CB2 8PB, is on 152-154 Hills Road. Its phone number is 01223413000.'
User: 'thank you goodbye'

Student:
Expensive