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:     Can I help you sir , what do you need ?  
 Person2:  I need a packet of cigarettes please .  
 Person1:      Of course sir , no problem .  
 Person2:  Thanks . 

1