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:       Whoa . Now I'm awake ! Zina has a secret admirer .  
 Person2:I really do not have time to deal with some lovesick computer geek .  
 Person1:        I know what you mean . I can't stand computer geeks .  
 Person2:Sorry , Dave , I didn't mean you . I am just not in the mood for this . I have work to do .  
 Person1:        Who do you think it is ? 

formal