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 , room service . Can I help you ?  
 Person2:  I ordered dinner about forty minutes ago . It hasn ’ t been delivery yet .  
 Person1:      We are sorry for the delay , ma ’ am . Could you hold the line , please ? I ’ ll check your order .  
 Person2:  Okay .  
 Person1:      Your order is ready . It ’ s on the way to your room . We ’ re very sorry to have you waiting , Ma ’ am .  
 Person2:  That ’ s okay . 

1