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:       What ’ s the problem ? Things are getting out of hand . You keep sticking your nose where it doesn ’ t belong .  
 Person2:What do you mean ?  
 Person1:        Now , I am responsible for training new staff , but you keep overriding my authority by trying to pose your methods . I know you are a hotshot college graduate with something to prove . But I don ’ t like your way . 

informal