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:     Excuse me . But are you Mrs . Smith from America ?  
 Person2:  That's it . I am Maria Smith . You must be Zhang Lin from Tianjin Sports Facility Co.Ltd .  
 Person1:      Yes . Nice to meet you , Mrs Smith .  
 Person2:  Nice to meet you too , Mr . Zhang . 

1