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: 'im looking for a cheap restaurant in the city center area'
System: 'La Raza, which is in the central part of town, is a great restaurant. It's in the cheap price range.'
User: 'what is the phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'what is the postcode'
System: 'La Raza is in the area with the postcode CB2 3LL.'
User: 'thank you good bye'

Output (English): Cheap