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: 'sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'yes i uh im trying to find a mexican restaurant in the expensive price range'
System: 'Nanna Mexico, which serves mexican and tex mex food, is a great restaurant. It's in the expensive price range.'
User: 'can i get the phone number and area of the venue'
System: 'The phone number of Nanna Mexico is 01223902150. The price for main courses ranges from 5 pounds 35 to 15 pounds 50 and the price for a cappuccino is 2 pounds 95.'
User: 'the area of the restaurant'
System: 'Nanna Mexico, which serves mexican and tex mex food, is an outstanding restaurant. It's in the expensive price range.'
User: 'the address of the restaurant'
System: 'Nanna Mexico is located on 33 Regent Street.'
User: 'uh thank you goodbye'
Question: 'Did the user ask for the phone number of the restaurant?'

Output (English): Yes