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 ?  
 Person2:  Yes , I want to have a photo .  
 Person1:      Will you please pose for your picture ?  
 Person2:  Yes . I am ready . 

1