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:       Jenny is going to marry another man next month .  
 Person2:Yes , I know .  
 Person1:        But , how can you be so calm . You loved her so much .  
 Person2:At least I ’ m the one who rates with her . I ’ m glad we can still be friends . 

formal