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:     Steven , what are you thinking about ?  
 Person2:  Oh , you know , tomorrow is Vicky's birthday . I am thinking what gift to give her .  
 Person1:      That's easy . A girl at her age must like beautiful ornaments . How about a hair pin ?  
 Person2:  It's a bad idea . Vicky has short hair .  
 Person1:      Well , what about a brooch ?  
 Person2:  Only old women like that .  
 Person1:      Maybe you should ask her what she wants for her birthday .  
 Person2:  OK . That's what I can do . 

1