Detailed Instructions: 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'.
Problem: Person1: So click here , then up to the top .
Person2:Er ... Hum ... Got it .
Person1: Then open that window.Yeah , that one .
Person2:Right !
Person1: And that's it . You're done .
Person2:I see what you mean . That was pretty easy after all .
Solution:
informal