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:     Is there a vacant table for two now ?  
 Person2:  Yes , sir , let me show you the table . This way please .  
 Person1:      Well , we would like to sit over there . Is that all right ?  
 Person2:  Of course . 

1