Given the task definition and input, reply with output. 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'.

 Person1:       London is such a historical city ! There ’ s history everywhere you look . There ’ s nelson ’ s column , built as a monument to one of the Britain ’ s great admirals and his important victory . He won the battle of Trafalgar in 1805 . 
 Person2:I ’ m looking forward to seeing Westminster abbey , where many historical figures are buried , like Isaac Newton , the great mathematician and Winston Churchill , the great wartime leader . 
 Person1:        Nearby , on the banks of the thames , there ’ s the statue of Boadicea . She fought the Romans when they invaded Britain . 
 Person2:Women have often played an important role in British history . Queen Elizabeth I built a navy strong enough to fight off the Spanish armada in 1588 . more recently , Margaret thatcher transformed british society in the 1980 ’ s . 
 Person1:        She was a very controversial leader . Are we going to visit the famous tower of London later ? 
 Person2:There ’ s a lot to see there . Perhaps we should go tomorrow . 
 Person1:        I ’ m looking forward to seeing the famous castle and prison . Many historic figures were imprisoned there in the past . I really want to see the crown jewels too . 
 Person2:I ’ Ve seen them before . They ’ re quite incredible . If you want to see historical figures in London , there ’ s one place you have to go . 
 Person1:        Where ’ s that ? Oh , I know ! Madame Tussaud ’ s the waxworks museum . 
 Person2:There you can see british leaders , entertainers , criminals , and royalty . 
 Person1:        Sometimes , it ’ s hard to know who belongs in each section of the museum ! 

informal