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: 'american restaurant'
System: 'What part of town do you have in mind? For example, something in the Arbury, Chesterton, or central area.'
User: 'dont care'
System: 'Gourmet Burger , which serves american food, is an outstanding restaurant.'
User: 'phone number'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'price range'
System: 'Gourmet Burger  is a great venue. The price for main courses ranges from 3 pounds 95 to 8 pounds 45.'
User: 'thank you good bye'
Question: 'Did the user ask for the phone number of the restaurant?'

Output (English): Yes