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:       Tom , I married Julia last month . Have you already known it ? 
 Person2:No , I haven't . I'm so surprised at the news . 
 Person1:        Indeed , we got married too soon . 
 Person2:Congratulations . But have you heard the proverb that if one gets married too hurriedly one may regret it for a long time ? 
 Person1:        Yes . However , I believe that marriage comes by destiny . I knew I would marry Julia when I met her at the first time . 
 Person2:How's your married life ? 
 Person1:        We're happy together now . 
 Person2:I have to say you're a well-matched couple . 
 Person1:        Thank you ! 

informal