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:       Bill , I have received the admission letter from Cambridge University ! 
 Person2:Congratulations ! 
 Person1:        How about you ? Have you got any news from university ? 
 Person2:No . But I am going to apply for some vocational schools . I like fashion design and want to study it . 
 Person1:        I am glad you can study something you really like ! 

informal