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: 'background noise'
System: 'Can I help you with anything else?'
User: 'a mexian tex mex restaurant'
System: 'What kind of price range are you looking for? For example, moderate.'
User: 'any price any area'
System: 'What kind of price range are you looking for? For example, cheap, or free.'
User: 'any price'
System: 'What kind of price range are you looking for? For example, cheap, or moderate.'
User: 'any price'
System: 'What kind of price range are you looking for? For example, cheap, expensive, or moderate.'
User: 'cheap'
System: 'There is no restaurant serving mexican and tex mex food in the cheap price range.'
User: 'moderate'
System: 'There is no restaurant serving mexican and tex mex food in the moderate price range.'
User: 'any price'
System: 'Would you like a mexican and tex mex food, or you don't care?'
User: 'mexican tex mex please'
System: 'There is no restaurant serving mexican and tex mex food in the moderate price range.'
User: 'expensive'
System: 'Would you like a venue with an expensive or moderate price range?'
User: 'yes'
System: 'Would you like a venue with an expensive or moderate price range?'
User: 'yes'
System: 'Would you like a venue with an expensive or moderate price range?'
User: 'yes'
System: 'Would you like a venue with an expensive or moderate price range?'
User: 'yes'
System: 'Would you like a venue with an expensive or moderate price range?'
User: 'thank you good bye'
Question: 'Did the user ask for the phone number of the restaurant?'

Output (English): Yes