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:       I can ’ t believe that Anthony is finally getting married ! 
 Person2:Yeah well it ’ s about time ! He ’ s been living with his parents for 40 years ! 
 Person1:        Don ’ t be mean . Look here come the bridesmaids ! Their dresses look beautiful ! 
 Person2:Who are those kids walking down the aisle ? 
 Person1:        That ’ s the flower girl and the ring bearer . I ’ m pretty sure they ’ re the groom ’ s niece and nephew.Oh , they look so cute ! 
 Person2:I just hope the priest makes it quick . I ’ m starving . I hope the food ’ s good at the reception . 
 Person1:        That ’ s all you ever think about , food ! Oh , I think the bride ’ s coming now ! She looks gorgeous.Wait , what ’ s she doing ? Where ’ s she going ? 
 Person2:Oh great ! Does this mean that the reception is canceled ? 

informal