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: 'clicking sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'clicking sil'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'cafe'
System: 'What type of food would you like? For example, Drinks and snacks only, English, or Fastfood.'
User: 'cafe food'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'fast food'
System: 'Would you like fastfood or X food?'
User: 'cheap'
System: 'Would you like fastfood or X food?'
User: 'cheap'
System: 'Would you like fastfood or X food?'
User: 'unintelligible food'
System: 'Would you like fastfood or X food?'
User: 'x food'
System: 'Would you like fastfood or X food?'
User: 'x food'
System: 'The Cambridge Blue, which is in the cheap price range, is a great cafe.'
User: 'unintelligible food'
System: 'There is no cafe serving fastfood.'
User: 'phone number'
System: 'The Cambridge Blue is located on 24 Regent Street and its phone number is 01223369222.'
User: 'phone number'
System: 'The phone number of the Cambridge Blue is 01223369222.'
User: 'thank you good bye'

Output (English): Cheap