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:       I know in your resume that you have worked in your present company for 3 years , can you tell me why you want to leave your present job and join us ?  
 Person2:Because the job I am doing in my present company is of no challenge , but I like challenge.Your firm is a young organisation with many innovative ideas . It has been very successful in an expanding market since its establishment 10 years ago . Working for you would be exactly the sort of challenge I am looking for .  
 Person1:        Why do you think you are qualified for this position ?  
 Person2:I have excellent communication skills and I am familiar with the procedures for the last company I worked for . Besides , I am a team player and have great interpersonal skills . 

formal