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 american restaurant in a cheap price range'
System: 'Gourmet Burger  is a great restaurant, it serves american food and it's in the cheap price range.'
User: 'whats the phone number'
System: 'The phone number of Gourmet Burger  is 01223312598. The price for main courses ranges from 3 pounds 95 to 8 pounds 45.'
User: 'cough'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'whats the ph phone number'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'of the area'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'what area is it in'
System: 'Gourmet Burger  is in the central part of town.'
User: 'thank you goodbye'

Output (English): Cheap