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: Consider Input: Person1: Did you hear about car accident on Spring Road yesterday ?
Person2:Yes , I did . I heard that they took both drivers to hospital . One needed surgery .
Person1: Yes . I heard he had a few broken bones too , but that the doctors have set the fractures without any problems .
Person2:The second driver was luckier . He had a concussion and needed some stitches for his head wound .
Person1: Yes . He was released from hospital yesterday evening . The other man could be there for weeks .
Person2:I understand that he ' s connected to a heart monitor and breathing apparatus . His condition can ' t be very good .
Person1: The hospital announced this morning that his condition is poor but stable . What does that mean ?
Person2:It means he ' s really badly injured , but he will almost certainly survive .
Person1: His family will be pleased to hear that . They must have been so worried .

Output: formal

Input: Consider Input: Person1: Hi , Tom . You forgot to put on your sports shoes ! It's Games Day today !
Person2:Well , I have them in my bag . I'Il put them on right away !
Person1: Let me give you a hand . You are carrying so many books .
Person2:Thanks !
Person1: Have you forgotten the cheers ?
Person2:No , I haven't . I've tried hard to remember and I'm quite sure I've memorized the rhythm correctly .
Person1: That's good !

Output: informal

Input: Consider Input: Person1: The academy is an important part of the education system .
Person2:I couldn't agree with you more .
Output: informal