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:     I'm afraid I've got to go . I have another appointment at five .  
 Person2:  Do you ? By the way , could you mail this letter for me as you go through the lobby ?  
 Person1:      No problem .  
 Person2:  Thank you . Come back to my office at the same time tomorrow . I'll have the pictures ready by then .  
 Person1:      I will . 

0