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: 'an expensive'
System: 'What kind of venue are you looking for? For example, a cafe, or a pub.'
User: 'price range indian restaurant'
System: 'Blue Spice, which serves indian food, is an outstanding restaurant. It's in the expensive price range.'
User: 'phone number and area code'
System: 'The phone number of Blue Spice is 01223413337. The price for main courses ranges from 12 pounds 50 to 12 pounds 50.'
User: 'thank you good bye'

Output (English): Expensive