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:       How's your father been ? 
 Person2:He's been out of work for a couple of days . 
 Person1:        What's wrong with him ? 
 Person2:He has a bad cold . 
 Person1:        Well , tell him to take it easy and that I hope he feels better . 
 Person2:Thanks . I'll tell him . 

informal