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: Oh , I must have been sitting in the same position too long . My legs have fallen asleep .
Person2:Shift it a little before you get up .
Person1: And I need to stretch my legs now .
A:
informal