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:       Does she make any sense to you ? 
 Person2:No . It's all Greek to me . 
 Person1:        She's speaking French , not Greek . 
 Person2:I know that . I mean I couldn't understand her at all . 
 Person1:        Me neither . All I have to do is study French hard . 
 Person2:I wish you the best of luck . 

formal