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:       Adam . I ’ m sorry .  
 Person2:Where have you been , Alice , you're over an hour late .  
 Person1:        Yes , But I couldn ’ t help it . I was late getting off work for a start and then I miss the bus . The bus I did catch that stuck in the traffic jam . It was one thing after another .  
 Person2:why ere you getting off work so late ? The office close at six , doesn ’ t it ?  
 Person1:        Yes . But those are the rush in that moment . And my boss ask me to do some urgent letters .  
 Person2:Didn ’ t you tell him you have an appointment ?  
 Person1:        Well , no . I thought I ‘ Ve finish in five minutes . and I didn ’ t want to be difficult about just few minutes , if I hadn ’ t been missing the bus and in the traffic I wouldn ’ t have been so late . I ’ m sorry .  
 Person2:Well . You ’ re here . 

informal