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:       How are you doing with your English Language studies ?  
 Person2:I think I'm making good progress .  
 Person1:        Is it harder than you thought ?  
 Person2:At first it was , but now I've got the basics.It ' s fun . 

formal