You will be given a definition of a task first, then some input of the task.
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: Good afternoon !
Person2:Good afternoon ! Sit down , please.How are you ?
Person1: I'm very well , thank you.How are you ?
Person2:Very well too , thank you very much.Isn ' t it a lovely day ?
Person1: Yes , it's beautiful , but it's also very hot .
Person2:Yes .
Person1: What's the weather like in your country ?
Person2:Mm ... It's quite warm now .
Person1: Where do you live ?
Person2:In London.Where do you live ?
Person1: Here.Near this school .
Output:
informal