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:       When I quarrel with my husband . He didn't even try to cool me out .  
 Person2:It takes two to make a quarrel and it takes two to mend fences .  
 Person1:        I was so angry that I could not keep cool . What I need is just an apology . 

informal