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:       Hello , Mr . Kramer . Could you spare a minute ?  
 Person2:That ’ s about all I can spare , Karen . What do you need ?  
 Person1:        I need to talk to you about that new secretary you ’ Ve hired . I think I ’ m going to have some problems working with her .  
 Person2:She seems to be quite qualified . If it ’ s a personal problem , I ’ d prefer it if you would work it out between yourselves . 

formal