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: 'noise sil'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'noise sil'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'a restaurant'
System: 'What kind of price range are you looking for? For example, expensive, or free.'
User: 'cheap'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'free'
System: 'What kind of venue are you looking for? For example, a pub, or a restaurant.'
User: 'a restaurant'
System: 'Are you looking for a cafe or a restaurant?'
User: 'noise sil'
System: 'Are you looking for a cafe or a restaurant?'
User: 'a restaurant'
System: 'Are you looking for a cafe or a restaurant?'
User: 'a fast food restaurant'
System: 'Are you looking for somewhere near a particular venue? For example, Christ's College, Clare College, or Primavera.'
User: 'i dont care about the area'
System: 'La Raza, which serves spanish food, is an outstanding restaurant. It's in the cheap price range.'
User: 'no not spanish food no fast food'
System: 'La Raza is on 4-6, The Basement, Rose Crescent.'
User: 'im looking for a fast food restaurant'
System: 'La Raza, which serves spanish food, is a great restaurant. It's in the cheap price range.'
User: 'im looking for a fast food restaurant'
System: 'La Raza, which serves spanish food, is an outstanding restaurant. It's in the cheap price range.'
User: 'fast food'
System: 'La Raza, which serves spanish food, is a great restaurant. It's in the cheap price range.'
User: 'not spanish food not spanish food fast'
System: 'What type of food would you like? For example, English, Fastfood, or Fusion.'
User: 'food'
System: 'What type of food would you like? For example, English, Greek, or International.'
User: 'fast food'
System: 'What type of food would you like? For example, Chinese take away, or American.'
User: 'american'
System: 'Gourmet Burger , which serves american food, is a great restaurant. It's in the cheap price range.'
User: 'whats the phone number'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'yawn sil'
System: 'Gourmet Burger  is an outstanding restaurant.'
User: 'whats the phone number'
System: 'The phone number of Gourmet Burger  is 01223312598.'
User: 'thank you good bye'
Question: 'Did the user ask for the phone number of the restaurant?'

Output (English): Yes