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 a cafe food restaurant and it should have a cheap price range'
System: 'Subway, which serves cafe food, is an outstanding restaurant. It's in the cheap price range.'
User: 'i want to know the phone number and the area its in'
System: 'The phone number of Subway is 01223461323. The price for main courses ranges from 1 pound 99 to 5 pounds 60.'
User: 'thank you good bye'

Output (English): Cheap