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'.

Ex Input:
Person1: Good evening , I'm so happy you could come .
Person2:Thank you for inviting me .
Person1: What would you like to drink ?
Person2:A glass of white wine would be fine , thank you .

Ex Output:
informal

Ex 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 !

Ex Output:
informal

Ex Input:
Person1: This one looks great ! I love the seashore .
Person2:So do I . The sun ... the sand ... the ocean !
Person1: And listen to this ! What do you think of sailing , swimming , windsurfing , and fishing ?
Person2:Oh , Tom ! They sound fantastic . I really like all those things .
Person1: Yeah ... me , too .
Person2:Well , except fishing . To be honest , I hate fishing , but I love all the others .
Person1: Hey ! Look at this ! We can stay in a big hotel or we can stay in a little cabin by the beach .
Person2:You know . I really don't those big hotels .
Person1: Neither do I . Let's stay in a cabin.It ' ll be much nicer right beside the ocean .

Ex Output:
informal