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: 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 .
[A]: informal

[Q]: Person1: Mom ! How can I help with the washing up ?
Person2:You peel the onions and wash them , then chop them .
Person1: OK ! Then what can I do after I finish it ?
Person2:Let me see . Wash the cabbage over there .
Person1: OK , got it .
Person2:What is your father doing now ?
Person1: Reading newspaper on the couch .
Person2:How about Daniel ?
Person1: Staying with Ultraman , of course . You know he likes it very much .
Person2:Be careful of the peeler . Don't cut your fingers .
Person1: I will .
Person2:OK , we've finished . Can you get your father and brother ?
Person1: OK !
[A]: informal

[Q]: Person1: Nick ! How ' s it going ?
Person2:Oh , hey ...
Person1: What are you doing in this neighbourhood ? Do you live around here ?
Person2:Actually , my office is right around the corner .
Person1: It was great to meet you last week at the conference . I really enjoyed our conversation about foreign investment .
Person2:Yeah , yeah , it was really interesting . You know , I'm in a bit of a hurry , but here ' s my card . We should definitely meet up again and continue our discussion .
Person1: Sure , you still have my contact details , right ?
Person2:You know what , this is really embarrassing , but your name has just slipped my mind . Can you remind me ?
Person1: Sure , my name is Ana Ferris . Don ' t worry about it , it happens to me all the time . I ' m terrible with names too .
[A]:
informal