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:       There are thousands of magazines published in the world to meet the needs of different readers . But only a few of them are influential world-wide .  
 Person2:You have hit the point . It's really hard for a magazine to be well known to people of various ages and educational backgrounds .  
 Person1:        But I think Digest is supposed to be the top one . Its subscribers or buyers are from all social classes , perhaps , a majority of them from the educated group . It's quite strange that the readers love it after reading it .  
 Person2:To my mind , the success of Digest is in the clever selection of its articles in each issue . 

informal