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 , Ms . Montgomery ?  
 Person2:  I ’ m sorry , Jeff . Please don ’ t interrupt me right now . I ’ m in the middle of a conversation .  
 Person1:      Oh , I ’ m sorry , Ms . Montgomery . I ’ ll come back later .  
 Person2:  That ’ s all right . I ’ ll be finished in a little while . 

0