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: I need some flowers for my girlfriend .
Person2:No problem . Would you like some artificial carnations ?
Person1: Oh , no . Carnations are not very elegant.Artificial flowers have no passion .
Person2:How much did you want to spend ?
Person1: Money is no object .
Person2:Our most elegant flower is Golden Lily .
Person1: I will take ten .
Person2:Do you want to add some baby ' s breath for that ? They are equally popular now .
Person1: Of course . Can I have it delivered to my girlfriend's house this afternoon ?
Person2:Yes , but there is a five dollars delivery charge .
Person1: That's ok . Here is the address .
formal

Person1: What do you plan to do on Sunday morning ?
Person2:Nothing special .
Person1: How about going to English corner with me ?
Person2:Oh , I'd rather not .
Person1: Why not ?
Person2:You know , I am poor at English , especially spoken English .
Person1: That's why you should go there , If you don't dare to speak English owing to the fact that you are afraid of making mistakes , you simply will never learn English .
formal

Person1: Good news !
Person2:What is it ?
Person1: The state of economy is starting to go up in our country .
Person2:That ' s just the short in the arm we need .
informal