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: 'sil'
System: 'What kind of price range are you looking for? For example, expensive.'
User: 'im looking for a seafood restaurant and it should have expensive price range'
System: 'Loch Fyne is a great restaurant, it serves seafood and it's in the expensive price range.'
User: 'i need to know the address phone number and price of the venue'
System: 'Loch Fyne is on 37 Trumpington Street. Its phone number is 01223902103. The price for main courses ranges from 9 pounds to 20 pounds.'
User: 'thank you goodbye'

Output (English): Expensive