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:       How would you comment on the paper ? 
 Person2:The paper editorials always stick to the quick . 
 Person1:        Don't you think it's a bit conservative ? 
 Person2:After all , I'm somewhat conservative . 

formal