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: Excuse me , ma ' am ?
Person2:Yes . What can I do for you ?
Person1: I ' m new here and I can ' t seem to find the lunch room .
Person2:Oh , it ' s right downstairs . I ' m going there myself . Just follow me .
formal