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: 'what is a cheap coffee shop'
System: 'The Cambridge Blue is an outstanding cafe and it's in the cheap price range.'
User: 'what is the phone number'
System: 'The phone number of the Cambridge Blue is 01223369222.'
User: 'what is the uh postcode'
System: 'The Cambridge Blue is in the area with the postcode CB2 1DB.'
User: 'thank you good bye'
Question: 'Did the user ask for the phone number of the restaurant?'

Output (English): Yes