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: Joseph , who is that woman ?
Person2:That's Susan .
Person1: What does she do for work ?
Person2:She's a lawyer .
Person1: Is she American ?
Person2:No , but she speaks English fluently .
Person1: She's really tall . Do you know her ?
Person2:Yes , I know her . We're friends .
Person1: Who's that man standing next to her ?
Person2:Which man ?
Person1: That short guy on her right . What's his name ?
Person2:Oh , that's Matt .
Person1: He's really good looking .
Person2:Yeah .
Person1: Do you know him ?
Person2:I don't know him , but I think my sister does .
Person1: Is he married ?
Person2:Yes , he's married .
Person1: I remember now . I met him before .
informal