Definition: 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: How are you ?
Person2:I ' m great . Thank you for asking .
Person1: What can I do for you ?
Person2:Do I owe any fees ?
Person1: You sure do .
Person2:Could you tell me how much I owe ?
Person1: You owe $ 235.13 in fees .
Person2:I can ' t believe that .
Person1: When will you be paying these fees off ?
Person2:I ' ll pay them off right now .
Person1: Cash or check ?
Person2:I will pay with cash .
Output:
informal