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 in city center'
System: 'Let me confirm. You are looking for a venue in the central area.'
User: 'yes'
System: 'Gourmet Burger , which is in the central part of town, is an outstanding restaurant. It serves american food.'
User: 'can i have the address'
System: 'Gourmet Burger  is on 43-45 Regent Street.'
User: 'may i have the phone number'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'thank you good bye'
Question: 'Did the user ask for the address of the restaurant?'

Output (English): Yes