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: Hey , Jim . I didn ' t know you biked to work .
Person2:Yeah , it helps keep me fit and helps the environment , too .
Person1: One less car on the road means less pollution .
Person2:Right . Since my work is near a park , it ' s a really nice ride , too .
Person1: How far is it ?
Person2:Oh , about 10 miles . It takes me about an hour .
Person1: That doesn ' t sound too bad . I wish I could do it , but I work in the city . So I take the train .
Person2:You ' re doing your part for the environment by using public transportation , too .
Person1: True . Well , see you tomorrow .
Person2:See you .

A: 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
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Q: Person1: Here's your drink , sir .
Person2:No , that's not right . I didn't order a coffee . I ordered a cola .
Person1: Oh , I'm terribly sorry , sir . I'll go and get you cola right away .
Person2:Waiter !
Person1: Yes , sir . I'll bring your drink right away .
Person2:It's not that . There's an animal in my soup .
Person1: Is there , sir ? I'm very sorry . I'll change it straight away .
Person2:I've never been to such a dirty restaurant , and never seen such slow service .
Person1: I'm really sorry .

A:
informal
****