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: 'background humming sound'
System: 'What kind of price range are you looking for? For example, cheap, or free. I can't hear you. What kind of price range are you looking for? For example, cheap, or free.'
User: 'i background humming sound'
System: 'What kind of price range are you looking for? For example, free, or moderate.'
User: 'thank you good bye'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'good bye'

Output (English): Don't Care