Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.
Input:  Person1:       You heard who won the election , right ? 
 Person2:Who was elected ? 
 Person1:        McCain won the election . 
 Person2:That can ’ t be true ! 
 Person1:        I ’ m upset , too . 
 Person2:I can ’ t believe people voted for him . 
 Person1:        People must want him as our President . 
 Person2:That doesn ’ t make any sense . 
 Person1:        I have more bad news . 
 Person2:How could the news get any worse ? 
 Person1:        I was only kidding , because Obama won the election . 
 Person2:That ’ s great news ! 

informal