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: 'unintelligible'
System: 'Can I help you with anything else?'
User: 'sil'
System: 'Can I help you with anything else?'
User: 'italian restaurants'
System: 'Would you like thai or X food?'
User: 'italian restaurants'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'italian restaurants'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'sil'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'sil'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'cheap cheap cheap cheap'
System: 'Clowns, which serves italian food, is an outstanding cafe. It's in the cheap price range and it's a great restaurant.'
User: 'cheap'
System: 'Clowns, which serves italian food, is a great cafe and an outstanding restaurant. It's in the cheap price range.'
User: 'sil'
System: 'Clowns is an outstanding cafe and a great restaurant, it serves italian food and it's in the cheap price range.'
User: 'sil'
System: 'Clowns is an outstanding cafe and a great restaurant, it serves italian food and it's in the cheap price range.'
User: 'sil'
System: 'Clowns is a great cafe and an outstanding restaurant, it serves italian food and it's in the cheap price range.'
User: 'sil'
System: 'Clowns, which serves italian food, is an outstanding cafe and a great restaurant. It's in the cheap price range.'
User: 'thank you goodbye'

Output (English): Cheap