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: Do you think the weather will be good this weekend ?
Person2:I heard it might rain .
Person1: Oh . That ' s a pity . I thought that we might go hiking in the hills .
Person2:Mmm ... Well we could go to that new art gallery instead .
Person1: Yes that might be a better idea .
Person2:Maybe we ' ll meet some of the artists too .
Person1: Ok - let ' s do that then !

Ex Output:
informal

Ex Input:
Person1: So , is L . A . all it's cracked up to be ?
Person2:Well , the stereotype in the movies is that L . A . is a frivolous town with a lot of flaky people . I guess , in the back of my mind , that's what I expected .
Person1: And , is it what you found ?
Person2:Well , it is and it's not . The city of L . A . is much bigger and more diverse than I had expected . There are people here from all over the country and all over world , like New York . I've heard people say that in L . A . , everyone is from somewhere else . Tha's partly true . So , I've met all kinds of people here . What I'm realizing is that the picture of L . A . that's in movies only represents a small segment of the city .
Person1: You're right . Life isn't always like the movies .

Ex Output:
formal

Ex Input:
Person1: Do you offer a course in business management ?
Person2:Yes , we do .
Person1: How many nights a week is it ?
Person2:It's 3 nights a week , Monday , Tuesday and Thursday .
Person1: And how long does the course last ?
Person2:It lasts for 9 months .
Person1: When does it start ?
Person2:The next beginning class starts on October 25th .
Person1: What time is the class ?
Person2:From 7 to 9 o'clock .
Person1: How much does it cost ?
Person2:It costs 125 dollars a month .
Person1: Yes , that's all right . I want to enroll in the course .
Person2:Thank you , please fill out this form for us .
Person1: Do you want me to fill it out now ?
Person2:Yes , please . we need a record of you education and your work experiences .

Ex Output:
formal