Given the task definition and input, reply with output. 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: May I ask whether we are allowed to wear casual clothes in the office ?
Person2:Sure , company rules are not very strict at this point .
Person1: Thank you for telling me that .
Person2:But remind you , there are some forbidden activities .
Person1: What are they ? I ' ll be careful .
Person2:Don ' t use office phones for personal matters .
Person1: I got it .
Person2:Never ever come to work drunk , also smoking in the office is not allowed .
Person1: I see .
formal