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: Do you remember Tina , my good friend ?
Person2:Yes .
Person1: She just broke up with her boyfriend .
Person2:Well , that happens . I hope she is all right .
Person1: But the problem is she and her ex-boyfriend are working in the same department . It is somehow embarrassing for them to see each other everyday .
Person2:That is the down side of an office romance . I hope their work is not affected by the emotional stress . The boss must be very annoyed if that will be the case .
Person1: Well , Tina says she would be able to handle it and concentrate on her own work , easier set them done . But working harder and concentrating only on the job might well helped to overcome the initial stress of the breakup .

Ex Output:
formal

Ex Input:
Person1: Are you almost finished with my hair ?
Person2:I'm almost finished .
Person1: How much longer is it going to be ?
Person2:I'm done now . Do you like it ?
Person1: I absolutely love it .
Person2:You really like it ?
Person1: Yes , I truly do .
Person2:I'm glad you like it .
Person1: How much do I owe you ?
Person2:It's going to be $ 55 .
Person1: Here you go , thanks for everything .
Person2:Make sure and come back in a couple of weeks .

Ex Output:
informal

Ex Input:
Person1: Do you have spare time tonight ?
Person2:What's the matter ?
Person1: There will be a live show of football tonight .
Person2:What teams are playing tonight ?
Person1: AC Milan versus Real Madrid .
Person2:That will be a tough match , right ?
Person1: Absolutely .
Person2:What are we waiting for ? It's already 7 pm now . Let's buy some drinks and desserts now .
Person1: Great idea ! Here we go !

Ex Output:
informal