Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.
Input:  Person1:     Is this Mr David Richton ?  
 Person2:  Yes .  
 Person1:      Hello , Mr David Richton , this is Min Wang calling from network , i am calling about the reporter position you advertised on the internet .  
 Person2:  Oh , yes , Mr Wang , i look at your resume you emailed , very impressive , are you a P . M . ~ meet someone like you , i was thinking of calling you this afternoon , and having a telephone interview .  
 Person1:      That is wonderful . 

1