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: Either we'll be millionaires , or we won't ... won't have a dime .
Person2:And it's all coming down to the next three weeks .
Person1: The only person who seems confident the software will be done on time is Zina .
Person2:Yeah , she is some kind of Superwoman , isn't she ?
Person1: Failure just isn't an option for her . I'm glad she's on our team .
formal