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:     Good evening , ma'am . May I help you ?  
 Person2:  Yes . I'd like to use a safety deposit box .  
 Person1:      Will the object fit into this size of box ?  
 Person2:  Let me see . I think it's OK .  
 Person1:      Could you fill out this form , please , ma'am ?  
 Person2:  Here you are .  
 Person1:      Thank you , ma'am . Would you like to use it until May 20th ?  
 Person2:  Yes .  
 Person1:      This way , please . Your box number is 522 .  
 Person2:  Thank you .  
 Person1:      If you would like to use the contents during the period of use , please come here in person . After confirming your signature , we will open the box .  
 Person2:  I see . Thank you . 

1