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'.

Person1: I've just got the examination results . I am afraid you haven't passed .
Person2:Oh , no ! I can't have failed . surely ?
Person1: I am afraid so . I am terribly sorry !
Person2:Whatever am i going to tell me parents .
Person1: Don't worry about that , I am sure they will understand . After all , it was a very difficult exam .
Person2:What am I to do ?
Person1: You can always take it again .
informal