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:     Does this bus really go to the mall ?  
 Person2:  It goes all the way there .  
 Person1:      Are you sure ?  
 Person2:  I know it does . I catch this bus a lot .  
 Person1:      How long does it take for the bus to get there ?  
 Person2:  The bus ride is only thirty minutes or so .  
 Person1:      Where do we get off the bus ?  
 Person2:  Right behind Macy's is a bus stop .  
 Person1:      The stop is really at the mall ?  
 Person2:  It's in the middle of the parking lot .  
 Person1:      That's perfect .  
 Person2:  I know it is . 

1