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:       Are you making what I think you're making ?  
 Person2:Nothing but the best , Cinnamon toast .  
 Person1:        What a nostalgic food !  
 Person2:Why the drama ? Have you been watching soap operas ?  
 Person1:        No . Just the smell of bread toasting to a perfect golden brown ...  
 Person2:Brings back memories ? 

formal