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:       Do you have any plans for Veteran ’ s Day ?  
 Person2:You mean Armistice Day .  
 Person1:        Well , as you know , on November 11th the allies signed a peace treaty with the Germans , also known as the Armistice Treaty . This marked the end of WWI and many countries around the world commemorate this date under names such as Remembers ’ Day . In Poland it ’ s their independence day ! There ’ s a lot going on around the world on this day .  
 Person2:Wow , I didn ’ t know ! Probably because I flunked history in school . 

formal