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 orders do we still need to pack , Gale ? We've been packing all day .  
 Person2:We still have to do about ten more .  
 Person1:        Well . I am really tired from packing all of the stuff all day . And it's about time to clock out .  
 Person2:I know . Maybe we can finish it tomorrow .  
 Person1:        Why not ! These orders are not urgent . We could do it first thing tomorrow morning  
 Person2:All right . Let's call it quits and go home .  
 Person1:        See . Great minds think alike . 

informal