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: 'yes'
System: 'Let me confirm. You are looking for a venue in the Newnham area.'
User: 'im looking for the expensive restaurant'
System: 'Let me confirm. You are looking for a venue in the Newnham area.'
User: 'expensive restaurant'
System: 'Let me confirm. You are looking for a venue in the Newnham area.'
User: 'trumpington area'
System: 'Are you looking for somewhere near a particular venue? For example, Byard Art, Cherry Hinton Water Play, or the Saint Barnabas Press Gallery.'
User: 'trumpington'
System: 'Are you looking for somewhere near a particular venue? For example, the Book and Print Gallery, the People's Portraits Exhibition, or the Whipple Museum of the History of Science.'
User: 'yes phone number'
System: 'Are you looking for somewhere near a particular venue? For example, the Folk Museum, Hughes Hall, or Trinity College.'
User: 'no'
System: 'The Oak Bistro, which is in the Trumpington part of town, is a great restaurant. It's in the expensive price range.'
User: 'the price'
System: 'The Oak Bistro is on 6 Lensfield Road and its phone number is 01223323361. The price for main courses ranges from 11 pounds 50 to 17 pounds 75.'
User: 'thank you goodbye'

Output (English): Expensive