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 venue are you looking for? For example, a cafe, or a pub.'
User: 'im looking for an expensive restaurant in the trumpington area'
System: 'The Oak Bistro is an outstanding restaurant, it's in the Trumpington part of town and it's in the expensive price range.'
User: 'what is the phone number'
System: 'The phone number of The Oak Bistro is 01223323361.'
User: 'sil'
System: 'The Oak Bistro is an outstanding restaurant.'
User: 'and what type of food did they have'
System: 'The Oak Bistro serves contemporary food.'
User: 'thank you goodbye'

Output (English): Expensive