Detailed Instructions: 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: I am checking out . Here is the key to my room .
Person2:Thank you . I'll just print out your receipt , and then you're free to go . Here you go !
Person1: Thanks .
Person2:If you don't mind me asking , how did you enjoy your stay at New York Hotel ?
Person1: This hotel could use some insecticide , but my time in New York was thoroughly delightful .
Person2:That's very honest of you . Rest assured that this hotel will have no insects next time .
A:
formal