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: 'sil'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'im looking for an english restaurant'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'im looking for an english restaurant any expensive'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'expensive expensive'
System: 'The Backstreet Bistro, which serves contemporary and english food, is an outstanding restaurant. It's in the expensive price range.'
User: 'expensive'
System: 'The Backstreet Bistro is a great restaurant, it serves contemporary and english food and it's in the expensive price range.'
User: 'what is the address and postcode'
System: 'The Backstreet Bistro is located on 2 Sturton Street and it's in the area with the postcode CB1 2QA.'
User: 'what is the address and postcode'
System: 'The Backstreet Bistro, which is in the area with the postcode CB1 2QA, is located on 2 Sturton Street.'
User: 'okay thank you goodbye'

Output (English): Expensive