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'.

Ex Input:
Person1: Do you think that climate change is responsible for the recent floods ?
Person2:It could be . There are floods in this country almost every year , but in recent years they have been more widespread and more frequent .
Person1: It seems that the climate in this country is changing .
Person2:The summers are hotter . The last three summers have been the hottest for the past 200 years . There have also been stronger winds .
Person1: I think that the changing climate is a sign that we are causing too much damage to the environment .
Person2:I think you ' re right . Climate change naturally over time , but I think that human activities are speeding up the change . I wish that government would join together and try to resolve the problem .
Person1: Me too . If we don ' t do something soon , It might be too late .

Ex Output:
formal

Ex Input:
Person1: Are you coming or not ?
Person2:I haven't decided yet .
Person1: Well , make up your mind . We need to know .
Person2:Ok , count me in .

Ex Output:
formal

Ex Input:
Person1: I came in response to your advertisement for a salesperson .
Person2:OK , please be seated . May I have your name , please ?
Person1: My name is Woody .
Person2:OK , Woody . Why are you interested in this job ?
Person1: Because I admire your company . Yours is one of the most effective and respectable companies in this city .
Person2:Have you worked anywhere else before ?
Person1: Yes , five years ago . I began to work in a fashion company in Shanghai . Two years ago , I came to Beijing , and worked in a department store as a salesman .
Person2:OK , your work experience is impressive , and I think you sound right for this position , but I do have 3 other people to interview , so you'll be hearing from us within a week .
Person1: Thanks .

Ex Output:
formal