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'.
Q: Person1: Let's do something different today .
Person2:Like how ?
Person1: I would like you to give me a different hair style .
Person2:What did you have in mind ?
Person1: Give me a short haircut .
Person2:Do you know how short you want your hair to be ?
Person1: I want you to cut it to a few inches long .
Person2:That's pretty short . Are you sure about this ?
Person1: I've had this idea for some time now .
Person2:I'm going to do it , but you have to be sure you really want me to .
Person1: This is what I want .
Person2:Fine then . Let's get started .
A:
formal