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've heard you're going to America tomorrow . I want to see you off at the airport .
Person2:Oh , thanks a lot .
Person1: What time are you leaving ?
Person2:1:30 P . m . But I've got to check in at 12:30 P . m .
Person1: What airline and what flight ?
Person2:Pan American Airlines . Flight 282 .
Person1: I'll see you at the airport at 12:30 P . m .
Person2:Ok . See you tomorrow .
A:
informal