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'.

Ex Input:
Person1: When in Rome , do as the Romans do , they say .
Person2:What do you mean ?
Person1: Roman is living in Rome , of course . And go to work by car , or bus , or on foot .
Person2:I think the Romans do what everyone else does .
Person1: Certainly .
Person2:And Roman really loves life . He knows how to enjoy himself .
Person1: Not always . But they like good meal .
Person2:Really ?
Person1: How can I go there to have a taste ?
Person2:By air of course .

Ex Output:
informal

Ex Input:
Person1: Thank you for showing me your offices , Mr . Becker . I can see why Washington bureaucrats enjoy their jobs .
Person2:Why do you say that ?
Person1: The city is beautiful , the off ... , the offices are modern and comfortable , and the work is so interesting .
Person2:Many people work for the federal government their entire adult lives . Government service can be a rewarding and secure career .
Person1: Do you mean financially rewarding ?
Person2:Well , many positions pay salaries that are comparable to those in private industries .
Person1: I ' Ve always thought that most bureaucrats are lazy .
Person2:Sometimes that ' s true , but not usually . Most feds are honest , hard-working professionals . It ' s hard to keep highly trained people , so the pay and working conditions have to be attractive .
Person1: How much do you make ?
Person2:I ' m a GS - 15 . That ' s high on the scale of workers , but even a GS - 1 is paid a living wage .

Ex Output:
informal

Ex Input:
Person1: Please excuse me , but I really have to be going .
Person2:Yes , of course . It was nice to see you .
Person1: It was nice to see you , too . And please give my regards to Mrs.Robbins .

Ex Output:
informal