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: 'i need to find a cheap restaurant in the addonbrookes'
System: 'What type of food would you like? For example, Continental, or Italian.'
User: 'cheap'
System: 'What type of food would you like? For example, Cafe food, Chinese, or Fastfood.'
User: 'less expensive'
System: 'What type of food would you like? For example, Contemporary, English, or Seafood.'
User: 'less expensive'
System: 'La Raza, which is in the cheap price range, is an outstanding restaurant.'
User: 'english'
System: 'What type of food would you like? For example, Contemporary, International, or Spanish.'
User: 'address'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'english'
System: 'There is no restaurant serving english food in the cheap price range.'
User: 'phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'phone number'
System: 'The phone number of La Raza is 01223464550.'
User: 'post code'
System: 'La Raza is in the area with the postcode CB2 3LL.'
User: 'post code'
System: 'La Raza is in the area with the postcode CB2 3LL.'
User: 'thank you good bye'

Output (English): Cheap