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: Hey , that ' s a very nice hairdo you ' re wearing !
Person2:Oh you ' re exaggerating . I ' m never really good at making hairdo .
Person1: You did it yourself ? Wow , you are good !
Person2:Thanks for saying so , but my husband thinks otherwise .
Person1: He ' s just got no idea of how good you are .
A:
informal