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: Look , my clothes are wet .
Person2:Mine are wet , too .
Person1: Unexpectedly , a girl threw a bucket of water on me .
Person2:She wished good luck to you .
Person1: The Dai people are enthusiastic .
Person2:Yes .
informal

Person1: T he nineteenth of June is my birthday . I'm planning to have a small party . Could you come ?
Person2:Happy birthday to you ! I'd really love to come , but I'm not sure right now . I'll try to make it.Thank you for your invitation .
informal

Person1: I've got some bad news about the bike you lent me .
Person2:What's that ?
Person1: I fell on the way to school , and your bike got scratched . I'm really sorry .
Person2:Don't worry about it . It's not new , it already has a few scratches . Did you get hurt ?
Person1: No , thank you .
Person2:That's the most important thing .
Person1: It's kind of you to say . I feel a little stupid .
Person2:Forget about it .
Person1: When you lent me the bike , it looked brand new , almost anyway .
Person2:Maybe , but really I have fallen a couple of times and it's been hit once or twice as well .
Person1: I appreciate that , thank you .
informal