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:       My elder aunt feels like vomiting , she is pregnant .  
 Person2:She'd better drink plenty of hot water and lie in bed .  
 Person1:        But she feels like having no appetite at all if she stays at home all day .  
 Person2:Don't worry . She will be all right . 

informal