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: Have you obtained any certificate of technical qualifications or license ?
Person2:Yes , I have received an Engineers Qualification Certificate and a drivers license .
Person1: How many years have you had the drivers license ?
Person2:I have two years driving experience .
Person1: That ' s good . What special skills do you have , can you tell me ?
Person2:I have experience in computer operation , proficiency in Microsoft Windows , Microsoft Word and Microsoft Excel .
Person1: What computer languages have you learned ?
Person2:Visual C + + , C and Delphi .
Person1: Have you gotten any special training in programming ?
Person2:No , but I have database programming experience and network knowledge .
[A]: formal

[Q]: Person1: Look ! It ' s the start of the Olympic Games .
Person2:So what ?
Person1: You want to watch , don ' t you ?
Person2:Not really . I couldn ' t careless about the Olympic Games .
Person1: Please yourself .
[A]: formal

[Q]: Person1: I used to be down on the sales people until I saw her in action .
Person2:She means business , for sure .
Person1: Most salespeople seem like half-brains . Zina's definitely an exception .
Person2:We'd better get back to work .
Person1: Yeah , I'm not too worried about Vince , but I'd hate to face Zina if we don't deliver ...
[A]:
informal