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.'
User: 'italian restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Castle Galleries, the Ruskin Gallery, or the Saint Barnabas Press Gallery.'
User: 'no'
System: 'Caffe Uno, which serves italian food, is an outstanding restaurant.'
User: 'is it expensive'
System: 'No. Caffe Uno is in the moderate price range.'
User: 'sil'
System: 'Clowns, which serves italian food, is an outstanding cafe and a great restaurant. It's in the cheap price range.'
User: 'im looking for an expensive italian restaurant'
System: 'Clowns, which serves italian food, is an outstanding cafe. This place, which is a great restaurant, is in the cheap price range.'
User: 'im looking for an expensive italian restaurant'
System: 'The Sorrento, which serves italian food, is an outstanding restaurant. It's in the expensive price range.'
User: 'background noise'
System: 'Would you like a venue with a cheap or expensive price range?'
User: 'expensive'
System: 'The Sorrento, which serves italian food, is a great restaurant. It's in the expensive price range.'
User: 'sil'
System: 'The Sorrento is an outstanding restaurant.'
User: 'what is the phone number'
System: 'The phone number of The Sorrento is 01223243533. The price for main courses ranges from 9 pounds to 16 pounds 95.'
User: 'what is the phone number'
System: 'The phone number of The Sorrento is 01223243533.'
User: 'thank you good bye'

Output (English): Expensive