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: Do you have any idea why I pulled you over today ?
Person2:I'm not sure .
Person1: One of your brake lights is out .
Person2:Really ? I'm sorry . I did not know that .
Person1: I'm going to give you a ticket .
Person2:Why can't you just let me off with a warning ?
Person1: It's just a ticket .
Person2:How much is the fine ?
Person1: The judge will let you know .
Person2:I have to be at court ?
Person1: Of course .
Person2:All right . Just give me the ticket .
Output:
informal