Task: Dialogue State Tracking
Input (English): 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'

Output (English): Expensive