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 morning , sir . Do you have a reservation ?  
 Person2:  Yes . My name is Charles .  
 Person1:      I see . We have a window table reserved for you .  
 Person2:  It's very kind of you .  
 Person1:      Would you like to order now or wait for a while ?  
 Person2:  Bring me the menu , please . 

1