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: 'a restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, the Museum Of Technology, or the People's Portraits Exhibition.'
User: 'restaurant'
System: 'What part of town do you have in mind? For example, something in the Cherry Hinton, riverside, or Romsey area.'
User: 'something in the chesterton area'
System: 'Hakka, which is in the New Chesterton part of town, is an outstanding restaurant.'
User: 'sil'
System: 'Hakka is an outstanding restaurant and it's in the New Chesterton part of town.'
User: 'perfect address'
System: 'Hakka is located on 24 Milton Road.'
User: 'unintelligible'
System: 'Blue Spice, which is in the Girton part of town, is an outstanding restaurant.'
User: 'and phone number'
System: 'The phone number of Blue Spice is 01223413337.'
User: 'bye thank you goodbye'
Question: 'Did the user ask for the phone number of the restaurant?'

Output (English): Yes