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 Q]: Person1: Don't just stand outside . Come on in .
Person2:Yeah .
Person1: This is Alex . Remember ? This is Sean .
Person2:Nice to meet you guys .
Person1: Over there are Stacy and Rebecca . We're all on the school's tennis team .
Person2:Who's that guy who's handing out beer to everyone ?
Person1: That's my boyfriend Matt . Isn't he cute ?
Person2:He sure is !
Person1: Come on . I'll introduce you two .
[EX A]: informal

[EX Q]: Person1: I am checking out . Here is the key to my room .
Person2:Thank you . I'll just print out your receipt , and then you're free to go . Here you go !
Person1: Thanks .
Person2:If you don't mind me asking , how did you enjoy your stay at New York Hotel ?
Person1: This hotel could use some insecticide , but my time in New York was thoroughly delightful .
Person2:That's very honest of you . Rest assured that this hotel will have no insects next time .
[EX A]: formal

[EX Q]: Person1: They must have got in through the kitchen window .
Person2:If only we'd remember to close it .
Person1: I am afraid your diamond bracelet has gone , darling !
Person2:I wish I'd put it in the bank .
Person1: Look ! they've taken your fur coat too .
Person2:I know , I am sorry I ever bought it .
Person1: I noticed they've taken our radio and left the television .
Person2:It's a pity they didn't take the tele . We need a new one . Anyway we can claim for all this from the insurance company .
Person1: I wish we could , but we can't , you see , we are not insured .
[EX A]:
informal