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:     Can you tell me what bus to catch from Altadena to downtown LA ? 
 Person2:  You can catch the 486 . 
 Person1:      That bus goes all the way to LA ? 
 Person2:  I believe so . 
 Person1:      Is the bus ride long ? 
 Person2:  It only takes 45 minutes to an hour . 
 Person1:      That's all ? 
 Person2:  It's a pretty short trip . 
 Person1:      Is there always a lot of people on that bus ? 
 Person2:  It only gets crowded once it gets to LA . 
 Person1:      Oh okay , thank you . 
 Person2:  No problem . 

1