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:     Good afternoon , sir . May I help you ? 
 Person2:  I booked a table yesterday . 
 Person1:      What's your name , please ? 
 Person2:  Smith . 
 Person1:      A minute , please . ... Yes , this way , please . 

0