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:     May I speak to Mr . Smith ?  
 Person2:  He is at the warehouse this morning .  
 Person1:      What time do you expect him back ?  
 Person2:  Sorry , I have no idea . You can call him there if you like .  
 Person1:      Ok , I have the number . Bye ! 

0