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: Did Bean send these dirty jokes to you , too ? Look !
Person2:What a creep ! Phony good luck e-mails are one thing , but sexual harassment is crossing the line .
Person1: No wonder he asked for my address first-he just wants to harass me !
Person2:You could try using a spam filter to reject stuff that's obviously pornographic or anything else you don't want .

Ex Output:
informal

Ex Input:
Person1: Hello , Tom !
Person2:Hello , Steven !
Person1: How are you doing ?
Person2:Not bad . What about you ?
Person1: I'm just a little tired .
Person2:Why ?
Person1: I have a lot of work to do in the company recently .
Person2:How is your family ?
Person1: Pretty fine , thanks .
Person2:Where are you going now ?
Person1: I am going to buy a new air conditioner for my parents . Oh , it ' s two o ' clock . I must go now .
Person2:OK , see you next time .
Person1: See you .

Ex Output:
formal

Ex Input:
Person1: Do you know where you want to transfer to ?
Person2:I don ' t have the slightest clue .
Person1: What school would you like to go to ?
Person2:I ' m not sure .
Person1: You honestly have no idea ?
Person2:PCC is perfectly fine for me .
Person1: You might as well stay here .
Person2:That ' s not a bad idea .
Person1: PCC is a wonderful institution .
Person2:You have a point .
Person1: So , what are you going to do ?
Person2:I ' m just going to keep going to PCC .

Ex Output:
informal