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: You ready ?
Person2:Am I ready for what ?
Person1: Are you ready to transfer to a new school tomorrow ?
Person2:Oh . Yes , I ' m ready to transfer .
Person1: You ' re not nervous , are you ?
Person2:I ' m very nervous .
Person1: Why are you nervous ?
Person2:I ' m not going to know anybody there .
Person1: That ' s not a problem .
Person2:That makes me nervous .
Person1: It ' s fun meeting new people .
Person2:I didn ' t think about it that way .

Ex Output:
formal

Ex Input:
Person1: Good morning Mike !
Person2:Morning Sally ! What's up ? you seem in a hurry !
Person1: I am having an exam at nine , It's already eight thirty .
Person2:Don't worry , I'll drive you .
Person1: Thank you very much !
Person2:How are your cases coming along ?
Person1: Very well , thanks , I will probably finish next week , but this is still a lot of work , I have been worked on in for six months , and i ' m so closed to end . I can feel it .
Person2:Wow , Good for you.It sounds like a lot of work . I'm proud of you ! Is this the right building ?
Person1: Yes , It's only eight forty . Thanks so much !
Person2:You're welcome.Good luck , bye !
Person1: Have a nice day , bye !

Ex Output:
informal

Ex Input:
Person1: Oh dear , my weight has gone up again .
Person2:I am not surprised , you eat too much .
Person1: And I suppose sitting at the desk all day at the office doesn't help .
Person2:No , I wouldn't think so .
Person1: I do wish I could lose weight .
Person2:Well , why don't you go on a diet ?
Person1: I've tried diets before but they've never worked .
Person2:Perhaps you should excercise more . Why don't you go to an exercise class .
Person1: Yes , maybe I should .

Ex Output:
informal