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: Hi , Janice . Our first weekend after being employed is coming . Show me your plan .
Person2:My mom phoned me this morning , and asked me to go back home to have housework chores .
Person1: What are you assigned to do ?
Person2:God knows . Speaking of chores , I would rather do some washing than cooking .
Person1: For me , I think I will iron my shirt and trousers . Actually , weekends tend to be the most hectic day in the whole week .
Person2:I really hope that I could sleep like a log all through two nights . But ... Some one said that weekends are a bit like rainbows ; they look good from a distance but disappear before we get up close to them .
Person1: I couldn't agree more .

Ex Output:
formal

Ex Input:
Person1: So , what happened ?
Person2:He never came .
Person1: He stood you up .
Person2:I wouldn ' t exactly characterize it in that way . I think something happened . Something terrible and unexpected that made it impossible for him to ... what if he showed up , took one look at me and left ?
Person1: Not possible .
Person2:Maybe , there was a subway accident .
Person1: Absolutely .
Person2:A train got trapped underground with him inside .
Person1: And no phone .
Person2:And you know , how those express trains create suction .

Ex Output:
informal

Ex Input:
Person1: Are you sure it was him ?
Person2:I used to date him . Of course it was him .
Person1: You're a nurse at New York General Hospital ?
Person2:Yes , on the cancer ward . And Taylor was there . He walked right by me and didn't even see me .
Person1: Maybe he was just visiting someone .
Person2:But you saw how skinny and pale he looks . He has " cancer patient " written all over his face .

Ex Output:
formal