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:       I know I'm a blabbermouth , but what do you think she should do , John ? 
 Person2:Honey , we're in the museum now . We're not here to discuss your coworker's love life . We're here to enjoy the great paintings by Picasso ! 
 Person1:        I know ! But it's really important to her ! Her whole life could be ruined by this man ! 
 Person2:You're making a federal case out of it . One unhealthy love affair can't ruin anything . It could even make your life more interesting . 
 Person1:        Are you serious , John ? 
 Person2:All I'm trying to say is that life is ... like ... er ... this painting . 

informal