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:       Well now that I know what kind of movies you like , tell me , what's your least favorite kind of movie ?  
 Person2:I don't really like sci-fi movies because they're always really weird .  
 Person1:        I know ! I don't get them at all . But wait , isn't ' Terminator ' a sci-fi movie ?  
 Person2:Hmm ... you're right . Well , I guess ' Terminator ' is an exception to the rule . 

formal