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:       Mr . Brown is in hospital again .  
 Person2:Is he ? He ’ s never been healthy .  
 Person1:        When I went to see him yesterday , he looked rather pale .  
 Person2:I ’ m afraid he won ’ t make old bones . 

formal