Given the task definition and input, reply with output. 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'.

Person1: Yeah . Just pull on this strip . Then peel off the back .
Person2:You might make a few enemies this way .
Person1: If they don't think this is fun , they're not meant to be our friends .
Person2:You mean your friends . I think it's cruel .
Person1: Yeah . But it's fun . Look at those two ugly old ladies ... or are they men ?
Person2:Hurry ! Get a shot ! ... Hand it over !
Person1: I knew you'd come around ...
formal