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'.
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Question: Person1: I'm tired .
Person2:Okay , let's call it a day .

Answer: informal

Question: Person1: what kinds of tv programmes do you enjoy watching ?
Person2:I like current affairs programmes and documentaries , especially wildlife ones . How about you ?
Person1: I like those kinds of programmes too . They ' re very informative . I think that many people underrate the education value of tv .
Person2:I agree . People often criticize tv for showing too much sex and violence .
Person1: yeah . And that ' s so funny because most people prefer watching sex and violence to watching something more educational !
Person2:right . You can ' t blame the tv stations for showing popular kinds of programmes . They need to make money from advertisements shown during and between programmes .
Person1: in my country , there ' s a time limit on the advertisements that can be shown . I think it ' s about six minutes per hour .
Person2:that ' s great idea . But don ' t the tv station lose a lot of money because of that ?
Person1: no . they don ' t . they simply charge higher prices at peak times . Is there no limit on the amount of advertisements that can be shown on tv in your country ?
Person2:not as far as I know . We have so many advertisements . the interruptions are unbearable sometimes ! That ' s one reason that many people prefer satellite or cable tv , where you pay a fixed amount each mo
Person1: some people have satellite and cable tv in my country , but people don ' t seem to keen to pay for their tv programmes . Besides , the terrestrial channels offer a good range of programmes .
Person2:well , there ' s a wildlife documentary on tv in a few minutes . Shall we ?

Answer: informal

Question: Person1: Car trouble center . How may I help you ?
Person2:My car won ' t start ! Stupid old car !
Person1: Hold on , before you kick your car let ' s go through some possible problems .
Person2:Fine .
Person1: OK , first of all , can you turn the key in the ignition ?
Person2:Yeah ! I am here with my friend and he thinks it may be the spark plug or the starter motor .
Person1: Those are possible problems , but tell me , when you turn the key , do you hear the starter motor crank ?
Person2:Yeah , it sounds like it usually does when I start the car , but nothing else happens . The engine won ' t start . Should I maybe press the accelerator ?
Person1: No . If you step on the accelerator pedal you can flood the carburetor and your car will never start .
Person2:So what do you think it is ?
Person1: I know this may seem like a silly question , but does your car have gasoline ?
Person2:Umm . yeah ! Right ! I got the car started ! Thanks for your help ! I told you to fill the tank !

Answer:
informal