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: 'knock sil'
System: 'What kind of venue are you looking for? For example, a cafe, a pub, or a restaurant.'
User: 'expensive english restaurant'
System: 'Would you like turkish or X food?'
User: 'english'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'expensive'
System: 'Would you like an expensive price range, or you don't care?'
User: 'yes'
System: 'Would you like an expensive price range, or you don't care?'
User: 'expensive'
System: 'The Backstreet Bistro, which serves contemporary and english food, is an outstanding restaurant. It's in the expensive price range.'
User: 'can i have the address'
System: 'The Backstreet Bistro is located on 2 Sturton Street.'
User: 'can i have the phone number'
System: 'The phone number of the Backstreet Bistro is 01223306306.'
User: 'can i have the post code'
System: 'The Backstreet Bistro is in the area with the postcode CB1 2QA.'
User: 'thank you good bye'

Output (English): Expensive