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 cafe, or a pub.'
User: 'what is an expensive pub'
System: 'There is no pub in the expensive price range.'
User: 'um what is an expensive pub'
System: 'There is no pub in the expensive price range.'
User: 'um'
System: 'Are you looking for somewhere near a particular venue? For example, Cafe Jello, Hughes Hall, or Magdalene College.'
User: 'what is a pub food restaurant thats expensive'
System: 'There is no pub in the expensive price range.'
User: 'okay whats a moderately priced pub food restaurant'
System: 'Can I help you with anything else?'
User: 'what is a moderately priced pub'
System: 'The Alma, which is in the moderate price range, is a great pub.'
User: 'whats the address'
System: 'The Alma is on Russell Court. I am sorry but there is no information on its area.'
User: 'what is the phone number'
System: 'The phone number of The Alma is 01223316722.'
User: 'thank you goodbye'

Output (English): Expensive