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: 'unintelligible sil'
System: 'What kind of price range are you looking for? For example, expensive, or moderate.'
User: 'i need a vegetarian restaurant'
System: 'The Rainbow Cafe is a great restaurant and it serves traditional and vegetarian food.'
User: 'what i i dont care about the price range'
System: 'The Rainbow Cafe, which serves traditional and vegetarian food, is an outstanding restaurant.'
User: 'do you know the address and phone number'
System: 'The Rainbow Cafe is on 9a King's Parade. Its phone number is 01223321551.'
User: 'thank you good bye'
Question: 'Did the user ask for the phone number of the restaurant?'

Output (English): Yes