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:       Are you coming to the bridal shower for Jane ? 
 Person2:Yes , I am . When is the wedding ? 
 Person1:        Aug 8 . 
 Person2:August bride . How nice ! By the way , who is going to be the matron of honor ? 
 Person1:        Mrs . White . 
 Person2:Oh , yeah ? I wonder who is going to give Jane away at the wedding . You know her father passed away several years ago . 
 Person1:        Maybe her uncle will . 
 Person2:I think so . The wedding will be held at her church , right ? 
 Person1:        Right . Red Rochester will officiate at the wedding . 
 Person2:Do you know where they will go on their honeymoon ? 
 Person1:        Yes , Jane says they will go to China . 

informal