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: 'a thai restaurant expensive price range'
System: 'The Wrestlers is a great restaurant, it serves thai food and it's in the expensive price range.'
User: 'address and postcode'
System: 'The Wrestlers is located on 337 Newmarket Road and it's in the area with the postcode CB5 8JE. The price for main courses ranges from 8 pounds 50 to 9 pounds 70 and the price for a cheapest pint of beer is 3 pounds 30.'
User: 'thank you and the postcode'
System: 'The Wrestlers is in the area with the postcode CB5 8JE.'
User: 'thank you goodbye'

Output (English): Expensive