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: 'expensive'
System: 'What kind of price range are you looking for? For example, cheap, or expensive.'
User: 'expensive'
System: 'What kind of price range are you looking for? For example, cheap.'
User: 'noise'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'expensive'
System: 'Caffe Nero, which is in the expensive price range, is a great cafe.'
User: 'serving any kind of food'
System: 'Caffe Nero is an outstanding cafe and it's in the expensive price range.'
User: 'noise'
System: 'Can I help you with anything else?'
User: 'what kind of food'
System: 'Caffe Nero serves italian food.'
User: 'whats the phone number'
System: 'The phone number of Caffe Nero is 01223307728.'
User: 'whats the address'
System: 'Caffe Nero is on 11 Market Street.'
User: 'noise'
System: 'Caffe Nero is an outstanding cafe.'
User: 'do they serve coffee'
System: 'Caffe Nero is a great cafe.'
User: 'do they serve coffee'
System: 'Caffe Nero is an outstanding cafe.'
User: 'what do they serve'
System: 'Caffe Nero is a great cafe.'
User: 'whats the address'
System: 'Caffe Nero is located on 11 Market Street.'
User: 'thank you goodbye'

Output (English): Expensive