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 know who won the election , right ?  
 Person2:I ’ m still shocked that Obama was elected .  
 Person1:        I couldn ’ t believe it , either .  
 Person2:He just made history .  
 Person1:        I hope you voted for him .  
 Person2:Of course I did . Did you ?  
 Person1:        I made sure to vote for him .  
 Person2:I am really excited about this .  
 Person1:        I know how you feel .  
 Person2:Hopefully , he ’ ll change things in our nation .  
 Person1:        I know that he will .  
 Person2:I trust him . 

informal