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:       Miss Gray , would you please type this report for me ? 
 Person2:Of course , Mr . Green . 
 Person1:        Can you print it out before 12 o'clock ? I need it this afternoon . 
 Person2:No problem . I will do it immediately . 
 Person1:        Please double space it and print it out on the laser printer so I can read it easily . 
 Person2:OK . Would you like this report done in a formal or informal style ? 
 Person1:        Please type it in a formal style . 
 Person2:I see . Anything else ? 
 Person1:        No , thanks . 

formal