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'.

Q: Person1: Is this the class to prepare for interviews ?
Person2:This is the right place . Please join us .
Person1: I have an interview tomorrow , so I hope I can learn everything quickly .
Person2:We are all going to have great interviews . What are some things that we need to remember in an interview ?
Person1: I think that we should make sure that our looks are the best they can be .
Person2:Right , and what about our friendliness and attitude ?
Person1: Yes , and being friendly and having a good attitude also help me relax .
Person2:Did you know that they pay as much attention to what you ask as to what you say in an interview ?
Person1: No , I didn ' t . What else should I keep in mind ?
Person2:Just relax , listen carefully to the questions , and be honest in your responses .

A: formal
****
Q: Person1: I am not convinced by your explanation . Could you explain it ?
Person2:Sorry , I really can't do that . There's little time left for us .
Person1: I can't accept your excuse . It's five o'clock .
Person2:Yeah . But I have an appointment with Ann .
Person1: Ok , sounds good . But I think it's your trick .

A: informal
****
Q: Person1: Excuse me , sir , Is this the road to the peace Store ?
Person2:You could get there this way , but it'd be faster to go along the Wort Street .
Person1: Where's Wort Street , please ?
Person2:Turn right at the third intersection , you'll see the street and then walk along the street to the south .
Person1: How far is it from the Wort Street ?
Person2:Just walk for a few minutes , you'll find it .
Person1: Thank you very much .

A:
informal
****