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:       Saying you want to kill yourself , you terrified me out of my wits . 
 Person2:I was playing a joke on you . 
 Person1:        That ’ s too much . 
 Person2:Dear , forgive me . I won ’ t do that again . 

informal