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:       Betty was in hospital . 
 Person2:I know that . I met her last week , and she looked as pale as death . 
 Person1:        She suffers from cancer . 
 Person2:That ’ s too bad . She ’ s been so kind to us all . 

informal