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: 'i am looking for mexican'
System: 'Are you looking for a cafe or a restaurant?'
User: 'restaurant expensive'
System: 'Nanna Mexico is an outstanding restaurant. It serves mexican and tex mex food. It's in the expensive price range.'
User: 'address and phone number'
System: 'Nanna Mexico is on 33 Regent Street and its phone number is 01223902150.'
User: 'thank you good bye'

Output (English): Expensive