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:       Your muscles are a spectacle !  
 Person2:Thank you.That ' s the result of exercise.By the way , do you work out ?  
 Person1:        No , but I am starting working out from now on .  
 Person2:Fine . 

formal