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:       Whatever we do , we should do it above board .  
 Person2:You are right . We shouldn't do anything under the table .  
 Person1:        Well , since you agree with me , we should put the issue above board instead of talking about it through other channels . 

informal