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: What's your new girlfriend like ?
Person2:Katherine ? Well , she's good at languages .
Person1: Does she know how to speak Spanish ?
Person2:She knows how to speak Spanish and Japanese .
Person1: Wow ! ! !
Person2:And she's good at sports , too . She knows how to play tennis and basketball .
Person1: That's terrific !
Person2:But there's one thing she's not good at .
Person1: What's that ?
Person2:She's not good at remembering things . We have a date , and she's an hour late ! !
informal