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:       Did you enjoy the movie ?  
 Person2:Oh , it's really a drag .  
 Person1:        Sorry to hear that . I think it's even better than On the Golden pond .  
 Person2:Hell with it ! Nobody will give it an Academy award ! 

informal