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:       Steven , I need badly your help .  
 Person2:What's the matter ?  
 Person1:        My wife has found that I have an affair with my secretary , and now she is going to divorce me .  
 Person2:How could you cheat on your wife ? You have been married for ten years .  
 Person1:        Yes , I know I'm wrong . But I swear that the affair lasts only for two months . And I still love my wife . I couldn't live without her .  
 Person2:I will try my best to persuade her to reconsider the divorce . But are you sure that from now on you will be faithful to her forever ?  
 Person1:        Yes , I swear . 

informal