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:     Have you any evening bus tour ?  
 Person2:  Yes , we have . The city is famous for its beautiful evening scenery .  
 Person1:      I have heard of that before . When shall we start ?  
 Person2:  It starts at 7:00 and lasts 3 hours . 

1