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:       How many people does your company employ ?  
 Person2:We have over sixty employees . We have about forty factory workers and technical people and the rest are admin and sales staff . We started off with only ten people , so our workforce has grown a lot .  
 Person1:        What's your annual turnover ?  
 Person2:It was just over two million euros last year . 

formal