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'.
Input: Person1: I really want to switch things up .
Person2:What were you thinking ?
Person1: I think I want to try a new style .
Person2:What would you like me to do ?
Person1: I want you to cut my hair shorter .
Person2:How short ?
Person1: I want my hair to be only a few inches long .
Person2:Do you really want it that short ?
Person1: Yes , I've been wanting it short for a while now .
Person2:If you really want me to , then I'll do it .
Person1: I'm absolutely sure that this is what I want .
Person2:Let's do it .
Output:
formal