Definition: 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'.
Input:  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 . 

formal