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'.

Example Input: Person1: Hello baseball fans , and welcome back to today ' s game ! My name is Rick Fields and of course , I am here , once again , with the man that seals the deal , Bob Copeland .
Person2:It ' s a beautiful day to see two world class teams face each other and fight for their right to be called champions .
Person1: Well , the national anthem has just been sung , and the umpire has started the game . It ' s time to play ball !
Person2:Roger Vargas is up at bat . The pitcher winds up and strike one !
Person1: A very nice curve ball by the pitcher . The catcher gives him the sign , he winds up and Vargas gets a line drive !
Person2:The players are scrambling to get the ball . Vargas gets to first base and he ' s still going ! The outfielder throws it to second ! Vargas slides ! He ' s safe !
Person1: Great play !
Person2:We have a runner on third and up at bat is Brian Okapi ! There ' s the pitch , he hits it ! It ' s going , going , that ball is gone !
Person1: Home run by Okapi ! That puts this team ahead by two as we are at the bottom of the fifth inning here at Richie Stadium !
Example Output: informal

Example Input: Person1: It was great meeting you .
Person2:Me too .
Person1: Maybe we can meet again sometime ?
Person2:Of course , but I'll have to go now .
Example Output: informal

Example Input: Person1: I ' m not a Christian . I just want to know why Americans believe that sort of thing .
Person2:Believe what ?
Person1: You know ... like , say God is the creator of the universe , the Bible , and Jesus Christ ...
Person2:You don ' t believe that ? Everyone interprets the Bible in a different way . To some people , the Gospel 5 is a source of much comfort .
Person1: What do you believe , John ? Are you Christian ?
Person2:To tell you the truth , I don ' t know if I ' m a Christian or not . Christians don ' t often share the same belief . But I believe that we all possess , by the grace of God , the potential to create fantastic changes on this earth .
Person1: Do you believe that one religion is better than another ?
Person2:No , all religions are essentially based on the same ideals , so no one is really better .
Person1: Do you go to church regularly ?
Person2:When I ' m home in the States , I go , but not in China .
Example Output:
formal