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: How are you doing ?
Person2:Everything ' s fine with me .
Person1: What can I do for you today ?
Person2:Is it possible for me to view the apartment today ?
Person1: Unfortunately , you will not be able to view it today .
Person2:Why can ' t I view it today ?
Person1: You ' ll need to make an appointment to view the apartment .
Person2:I understand . May I make an appointment then ?
Person1: How does this Friday sound ?
Person2:Friday at 6 pm . would be perfect .
Person1: That will be fine .
Person2:Thanks for your help .
Output:
informal