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: My sister was taken to the hospital yesterday
Person2:What happened ?
Person1: She was hit by a car . Luckily , she wasn't seriously hurt .
Person2:Let's buy some flowers , and pay her a visit
Person1: We'll have to hurry ; visiting hours will be over soon
Person2:OK . Let's go
answer:
formal

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: Belinda , I ' m going to a party tonight . What shall I wear ?
Person2:Is it formal or informal ?
Person1: I guess it ' s formal .
Person2:Then , you should dress well .
Person1: That ' s right .
Person2:I think a white shirt with a blue tie looks nice on you .
Person1: You are smart .
Person2:Of course , the sports shoes don ' t go with the formal occasions .
Person1: You are right . What kind of shoes should I wear ?
Person2:The brown leather shoes go well with your trousers .
Person1: Good idea . Oh , by the way , would you please pick me up after the party , honey ?
Person2:It ' ll be too late ; you ' d better take a taxi .
Person1: OK .
answer:
informal