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: Do you like a package tour or to travel alone ?
Person2:I prefer a package tour , and we don't have to worry about accommodation , meals or that sort of trivial demanding things .
Person1: I prefer travel alone . I'll have a lot of time lingering at one place .
[A]: formal

[Q]: Person1: I can ' t believe the cost of apartments in New York City .
Person2:Oh , you didn ' t know that apartments here are considered valuable , even if they are small and crowded ?
Person1: Of course I had heard about that , but now I know how expensive it is to rent a place here .
Person2:I don ' t mind paying high rent to live in New York .
Person1: Why ? You pay so much for such a tiny space to live .
Person2:Yeah , but so what ! I ' m proud to live in the world ' s most exciting city . And , the salaries here are the highest in the nation , too .
[A]: informal

[Q]: Person1: What kind of sport do you often do ?
Person2:I go jogging , how about you ?
Person1: I used to swim a lot , but now I'm taking gym classes .
Person2:Oh , that's fantastic !
[A]:
informal