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'.
Input: Person1: Look , daddy is on again . Don't you think he is handsome ?
Person2:To some extent , he is . And what do you think we move to a better place ? I can't see him clearly from here .
Person1: The seats in the middle of this stadium are great , but they're already occupied by somebody else .
Person2:Oh , thank you for pointing that out . By the way , have you been following NBA for this season ?
Person1: Of course , tomorrow evening there will be a most exciting game .
Person2:Who plays who ?
Person1: Rockets vs Lakers . Yao Ming , my idol , will appear in front of several hundred million of the worldwide audience .
Person2:It's amazing . And when did he begin to play in the NBA ?
Person1: In 2002 . And since then he has attracted more attention than ever .
Person2:I can't consider you as a little kid any more . I know he is very tall .
Person1: Oh , you know something . He is 2.26 meters tall . But he is also nimble and skillful .
Person2:I also heard if a player has committed 5 fouls then he must be out of the game .
Person1: Yes , what's worse is he can't take any further part in the game .
Person2:That's really terrible . Oh , God , we forgot to cheer for Daddy .
Person1: Never mind . After all he is not so attractive as Yao Ming , right ?
Person2:You are always so naughty .
Output:
informal