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: Look ! It ' s the start of the Olympic Games .
Person2:So what ?
Person1: You want to watch , don ' t you ?
Person2:Not really . I couldn ' t careless about the Olympic Games .
Person1: Please yourself .

Ex Output:
formal

Ex Input:
Person1: Did you hear the news ? Two of our major suppliers , Murphy Music and U-Tunes are merging ! If they are conglomerated into one company into one company , it would have some serious affects on our market strategy .
Person2:Are you sure ? Who told you that ? I highly doubt that they would take the step to merge into one company ... They're supposed to be bitter enemies , the strictest of competitors.It must be a rumor.It can't be true .
Person1: I read it myself on the financial page.They ' re really going to join together . U-Tunes was bought out by Murphy's , they will take over the company as of next month .
Person2:The competition must have been too stiff for U-Tunes.Otherwise why would they allow themselves to be taken over by their sworn enemy ?
Person1: I guess they must have figured it would be easier to merge than to keep up the cutthroat competition.If you can't beat'em , join'em .

Ex Output:
informal

Ex Input:
Person1: I want to open a saving account , sir . What's the proper procedure ?
Person2:First , you fill out the application form and then we'll issue you a passbook .
Person1: Is there any minimum for the first deposit ?
Person2:No , Even a dollar is all right . Here's your passbook , sir , just sign your name on it .
Person1: What is the annual interest rate ?
Person2:It varies from time to time . At present it is 6 % .
Person1: By the way , can I open a checking account too ?
Person2:By all means . But you have to deposit enough money before you can write out your checks .

Ex Output:
formal