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'.

Person1: John , do you mind helping me prepare for the picnic ?
Person2:Sure . Have you checked the weather report ?
Person1: Yes . It says it will be sunny all day . No sign of rain at all .
Person2:I'd like some toast and chicken wings .
Person1: Okay . Please take some fruit salad and crackers for me .
Person2:Done . Oh , don't forget to take napkins , disposable plates , cups and picnic blanket .
Person1: That's great . We can also take the dragon kite with us . After the picnic , we can fly it .
Person2:Cool , we can take shuttlecock and badminton racket .
Person1: Okay , it sounds good .
informal