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:       Let ’ s call it a day .  
 Person2:It ’ s nice to go home earlier once in a while . But it ’ s the evening rush .  
 Person1:        It ’ s hard to commute a long way .  
 Person2:Sure it is . I really hate to get caught in a traffic jam . 

informal