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 an expensive restaurant in the castle hill area'
System: 'What part of town do you have in mind? For example, something in the Addenbrooke's, Girton, or Romsey area.'
User: 'castle hill'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, Romsey, or Trumpington area.'
User: 'castle hill area'
System: 'Are you looking for somewhere near a particular venue? For example, the Technology Museum, the Botanic Garden, or Old Schools.'
User: 'no'
System: 'What type of food would you like? For example, Chinese, or Japanese.'
User: 'ah doesnt matter'
System: 'Blue Spice, which is in the expensive price range, is an outstanding restaurant.'
User: 'ah whats the phone number and post code'
System: 'Let me confirm. You don't care about the food. You are looking for a venue.'
User: 'thats right'
System: 'Are you looking for a pub or a restaurant?'
User: 'ah restaurant expensive restaurant'
System: 'The phone number of Blue Spice is 01223413337 and it's in the area with the postcode CB1 7DY.'
User: 'thank you good bye'

Output (English): Expensive