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:     Mr . Crane ’ s office . Sandy speaking . May I help you ?  
 Person2:  Hi , Sandy . It ’ s Walter Knight . I need to book some time with Mr . Crane .  
 Person1:      Certainly , Mr . Knight . When would you like to meet with him ?  
 Person2:  Can you see what his schedule is like on Wednesday ? 

1