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: The whether in Beijing is just beautiful .
Person2:Autumn is the best season in Beijing you know ?
Person1: Yes . I can see . The summer heat is over . And the winter cold is still far away .
Person2:What is the whether like in Washington at this time of this year ?
Person1: Autumn is also very nice In Washington .
Person2:Is it very cold in winter there ?
Person1: No . it isn ' t . But sometimes it slows a lot in winter .
Person2:Does it rain a lot in summer there ?
Person1: Oh . Yes . Sometimes it rains very heavily
Person2:How about here in Beijing ?
Person1: There ' s a lot of rain in summer . But it seldom rains in autumn
Person2:I feel it ' s rather dry here
Person1: That ' s true . many people from the south don ' t like the whether here .
Person2:Are you from south ?
Person1: No . I ' m from the north . I was born in Beijing actually .
Person2:I see . So this is your hometown ?
Output:
formal