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:       Look at this headline - Elvis Baby Born on Spacecraft . Where do these tabloids get such crazy stories ?  
 Person2:I ’ Ve often wondered the same thing . I also wonder who reads them . Then I realize that I ’ m standing here reading them myself .  
 Person1:        It looks as though everyone in line reads them , or at least looks at the headlines .  
 Person2:I think we picked the right line . This one seems to be moving more quickly than the others .  
 Person1:        Maybe our checker is faster at scanning the food .  
 Person2:I ’ m glad . We have only about twenty things here , and I ’ m in a hurry to get home . 

informal