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:     Hello . Excuse me . Do you know if there's a Commercial Bank around here ?  
 Person2:  Yes , go straight along Beijing Road and turn right .  
 Person1:      Straight on , and turn right . Is it far ?  
 Person2:  No , it's just a couple of minutes .  
 Person1:      Thanks very much .  
 Person2:  You're welcome . 

1