instruction:
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'.
question:
Person1: do you like playing games ?
Person2:I like playing computer games , but I'm not really into board games .
Person1: how about individual games like the Rubik's cube or solitaire ?
Person2:the Rubik's cube is so difficult to solve that I think it should be banned !
Person1: if I taught you how to do it , I'm sure you could solve it .
Person2:how did you figure out how to slove the Rubik's cube ?
Person1: I didn't really have to figure it out . I just followed the instructions !
Person2:I had no idea there were a set of instructions . I thought everyone who could solve it were all geniuses !
Person1: hints are really important when you're solving puzzles . If you give me some hints about playing that PS2 game , I ' ll show you how to solve the Rubik's cube .
Person2:it's a deal .
Person1: do you remember , years ago , when everybody at the New Year's party had yo-yos ?
Person2:yeah . That was a strange party . Can you still do any of those yo-yo tricks ?
Person1: I don't know . I haven't tried yo-yo since that party !
Person2:I could never figure out how to use my yo-yo .
Person1: if you don't start when you're young , it's hard to get the hang of it .
Person2:let's get started with this game then .
Person1: ok .
answer:
formal

question:
Person1: I ' Ve got this really neat idea , you can hire a car and drive straight there .
Person2:Are you nuts ? What would my friends think if they see me in a hired car ?
Person1: But that ' s the quickest way to make your plans work .
Person2:Oh this is hard ! Well , I ' ll see what I can do .
answer:
informal

question:
Person1: May I be of any help ?
Person2:Yes . Show me the sweaters , please .
Person1: What style ?
Person2:Well , could you bring me all the styles of pullovers ? I am not quite sure which one I will buy .
Person1: Ok . Here are the ones , turtleneck pullover , crewneck pullover , V-neck pullover and cowl-neck pullover .
answer:
formal