TASK DEFINITION: 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'.
PROBLEM: Person1: You look very professional in the suit .
Person2:The company regulates that men should wear a suit and tie in business meeting . Company policy is not negotiable .
Person1: I appreciate it . It is related to company image .

SOLUTION: informal

PROBLEM: Person1: What did he say ?
Person2:He said he would tell us the secret of becoming a successful man .
Person1: It ' s too good to be true ! If I were there , I would ask him if he himself was a successful man .
Person2:Nobody would drive him up a wall by asking him such a question , you know .

SOLUTION: formal

PROBLEM: 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 thirty P . m . But I've got to check in at 12 thirty P . m .
Person1: What airline and what flight ?
Person2:Pan American Airlines . Flight 282 .
Person1: I'll see you at the airport at 12 thirty P . m .
Person2:Ok . See you tomorrow .

SOLUTION:
informal