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:     Hi , Mary ! You're here already . Where's Harry ? 
 Person2:  He isn't a punctual person . We may have to wait for a little while . 
 Person1:      That should give us time for a cup of coffee . I'll go and get some . 
 Person2:  Make it three cups . Here comes Harry . 

1