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:       What experience do you have with office machinery ?  
 Person2:I know how to use the telex machine , the photocopier , and the word processor . By the way , I took a computer course in university .  
 Person1:        Where do you want to be in five years ?  
 Person2:I want to be a manager .  
 Person1:        Very good . Any questions ?  
 Person2:Nothing . I think I'll take the job . 

formal