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 noise'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'restaurant'
System: 'What type of food would you like? For example, Fusion, Seafood, or Thai.'
User: 'pub food'
System: 'What part of town do you have in mind? For example, something in the central, riverside, or Romsey area.'
User: 'background noise'
System: 'Are you looking for somewhere near a particular venue? For example, Artspace, the Gallery at twelve A High Street, or Old Schools.'
User: 'background noise'
System: 'What part of town do you have in mind? For example, something in the Castle Hill, Newnham, or Romsey area.'
User: 'background noise'
System: 'What part of town do you have in mind? For example, something in the Arbury, central, or Girton area.'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the Arbury, Fen Ditton, or Girton area.'
User: 'central'
System: 'Are you looking for somewhere near a particular venue? For example, the Botanic Gardens, Churchill College, or the Museum of Archaelogy and Anthropology.'
User: 'central'
System: 'What part of town do you have in mind? For example, something in the Fen Ditton, King's Hedges, or Newnham area.'
User: 'expensive'
System: 'There is no pub in the expensive price range.'
User: 'city center'
System: 'Can I help you with anything else?'
User: 'no'
System: 'What part of town do you have in mind? For example, something in the Arbury, Girton, or Newnham area.'
User: 'background noise'
System: 'There is no pub in the expensive price range.'
User: 'thank you good bye'

Output (English): Expensive