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 pub, or a restaurant.'
User: 'a cheap restaurant'
System: 'What type of food would you like? For example, Cafe food, pub, or Continental.'
User: 'pub'
System: 'Let me confirm. You are looking for a restaurant.'
User: 'correct'
System: 'What type of food would you like? For example, Drinks and snacks only, or Fusion.'
User: 'sure yes'
System: 'What type of food would you like? For example, American, or Vegetarian.'
User: 'cheap'
System: 'What type of food would you like? For example, Chinese take away, Japanese, or Spanish.'
User: 'american'
System: 'The Dojo Noodle Bar, which is in the Girton part of town, is an outstanding restaurant. It's in the cheap price range.'
User: 'american'
System: 'There is no restaurant in the Girton area. There is no restaurant serving american food.'
User: 'ok'
System: 'The Dojo Noodle Bar is an outstanding restaurant.'
User: 'ok'
System: 'Gourmet Burger , which serves american food, is an outstanding restaurant. It's in the cheap price range.'
User: 'thank you good bye'

Output (English): Cheap