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 ’ m so relieved that your ankle wasn ’ t broken ! I feel just awful about this whole thing . I wanna make it up to you . Let me take you out to dinner tonight . My treat . 
 Person2:That sounds great ! I ’ d love to ! Here is my address . Pick me up at eight ? 
 Person1:        Perfect ! 
 Person2:Thank you for such a lovely evening ! The food was amazing , and I had a great time . 
 Person1:        Me too.You look so beautiful tonight ! I wish this night would never end.There ’ s something I have to tell you ... 
 Person2:What is it ? 
 Person1:        I woke up today thinking this would be just like any other ordinary day , but I was wrong . A twist of fate brought us together . I crashed into your life and you into mine , and this may sound crazy , but I ’ m falling in love with you , Veronica . 

informal