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: Hey Bobby . What's going on ?
Person2:Just taking a smoke break .
Person1: I forgot my cigarette today . Do you have another one ?
Person2:Sure . Here you go .
Person1: Thanks .
Person2:I didn't know you smoked .
Person1: Really ? I've been smoking for over a year now .
Person2:Oh . You're new to smoking still . I've been smoking for 7 years .
Person1: You ever tried to quit ?
Person2:Many times . I'm really addicted . It's harder to stop than you think .
Person1: Yeah . I tried to quit last month , and I thought it was going to be easy , but it turns out that I'm still smoking .
Person2:I highly recommend you quit soon . The longer you smoke , the harder it becomes to quit .
Person1: I think you're right . Aright . Gotta go to class . Thanks for the cigarette . I'll talk to you later .
Person2:No problem . I'll talk to you later .

A: informal
****
Q: Person1: Oh , Ralph , I heard it is very dangerous traveling in space . Disasters have happened before . If the spaceship were out of order . . .
Person2:You should be optimistic about this . Things have taken a good turn . You should remember that less than two centuries ago the dangers of train travel seemed similarly terrible .
Person1: But is it possible that travelers could be hit by meteors ?
Person2:It's once in blue moon .
Person1: What do you think is the real danger man faced in space ?
Person2:The main one is radiation . There are two sorts of radiation man must fear in space . The first is radiation from the sun , and this is particularly dangerous when the sun is very active and explosions are occurring on its surface . The second , less harmful , comes from the so-called Van Allen Belts .

A: formal
****
Q: Person1: What a lovely day , isn't it ?
Person2:Yes , it's nice and bright .
Person1: I hope it stays like this .
Person2:I hope so too .
Person1: Is the weather usually like this here ?
Person2:It's usually a bit hotter than today .
Person1: What's the weather like in winter ?
Person2:It's pretty cold and it often snows .
Person1: I wonder what it ' s going to be like tomorrow .
Person2:Let's hear the weather report later . What's the weather like in your hometown ?
Person1: Neither too cold , nor too hot .
Person2:That's quite a lovely weather .
Person1: Yes , especially in spring .
Person2:Have you ever seen a hurricane ?
Person1: Once , when I was a child .
Person2:Do they often happen in your country ?
Person1: Now and then .
Person2:Oh , it's time for the weather reporter . Let's turn on the TV .

A:
informal
****