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'.

[Q]: Person1: Paul , let's go and see Grandpa this afternoon .
Person2:But Grandpa will be working .
Person1: It's Saturday .
Person2:I almost forget .
[A]: informal

[Q]: Person1: What is the weather like today ?
Person2:It stops snowing , but there's a bit wind .
Person1: And the streets are covered with ice . Do you know what the temperature is today ?
Person2:I missed today's weather for cast in the radio
Person1: It seems 10 degree below zero at least . I don't mind the cold weather , but do hate when it get slippery .
Person2:The ice is soon be thick for skating . I'm so fine to want a sport
Person1: That's fine . let's go skating together tomorrow .
[A]: formal

[Q]: Person1: Robin , what are you going to do tomorrow ?
Person2:Bob and I plan to play hockey in the morning .
Person1: And later ?
Person2:Well , in the afternoon , after a long nap , we ' ll go yachting with Nora .
Person1: It seems that you will have a nice day tomorrow .
Person2:How about you ? What are you going to do tomorrow ?
Person1: I have a lot of work in the office and a lot of chores in the house.How I envy you , Robin !
[A]:
formal