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:       My son is alway complaining that I dump on him . He was very rude and told me to mind my own business . I cannot put up with that . 
 Person2:What does his dad say ? 
 Person1:        John is a peacemaker.He simply doesn ’ t bother.He says he should give him a free hand . 

formal