Detailed 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'.
Q: Person1: ... I knew it . I always knew you were a lesbian !
Person2:She's my roommate , not my date . The D-man , as in dork .
Person1: Haha . Still got that great sense of humor , I see . Here's my card . I sell used cars . A car from us is a car you can trust !
Person2:Alrighty then . Didn't you use to date Sheryl ?
Person1: Sweet little lassie . Yep , broke her heart when the D-man told her he couldn't be a one-woman guy .
Person2:Oh ? I heard she dumped you . Anyway , she's right over there . Oh , Sheryl !
A:
formal