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:       You are starting to learn English ?  
 Person2:Yeah . I like it , Dad .  
 Person1:        You ’ re lucky you start to learn it so easily . I learned English very late , and learned it all by myself . At that time we didn ’ t have a good English studying environment . I have to keep my dictionary on hand .  
 Person2:Really ? 

informal