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:       What do you think of when you're praying ? 
 Person2:I try to picture the Lord's face in my mind . 
 Person1:        Does that help you faith ? 
 Person2:Yes . 

formal