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: 'expensive restaurant in castle hill area'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or free.'
User: 'expensive'
System: 'What type of food would you like? For example, Drinks and snacks only, pub, or French.'
User: 'any'
System: 'What part of town do you have in mind? For example, something in the Fen Ditton, Girton, or riverside area.'
User: 'castle hill area'
System: 'What type of food would you like? For example, Chinese take away, Italian, or Thai.'
User: 'italian'
System: 'What part of town do you have in mind? For example, something in the riverside, Romsey, or Trumpington area.'
User: 'castle hill area'
System: 'What kind of price range are you looking for? For example, cheap, free, or moderate.'
User: 'expensive'
System: 'Ask is a great restaurant, it serves italian food and it's in the expensive price range.'
User: 'is it in the castle hill area'
System: 'What part of town do you have in mind? For example, something in the Barnwell, Castle Hill, or Newnham area.'
User: 'castle hill'
System: 'Are you looking for somewhere near a particular venue? For example, Little Saint Mary's, Magdalene College, or Pembroke College.'
User: 'no'
System: 'Ask is an outstanding restaurant, it serves italian food and it's in the expensive price range.'
User: 'what is the phone number'
System: 'The phone number of Ask is 01223364917.'
User: 'thank you'
System: 'Ask is a great restaurant.'
User: 'thank you goodbye'
Question: 'Did the user ask for the phone number of the restaurant?'

Output (English): Yes