Definition: 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'.
Input:  Person1:       Hello , there . What can we do for you today ?  
 Person2:I received some leaflets in the post from you , one of them talked about a new service you have where you can transfer money between this bank and securities companies . Is that right ?  
 Person1:        Yes , that's right . We have just introduced the program , but it's very popular already .  
 Person2:I also read that if the customer is a stock investor , which I am , it's possible to get additional benefits ?  
 Person1:        Right again . We can provide a tailored consultation service for you , giving you the latest quotes from the Stock Exchange and help you to plan what exactly you do with your investments .  
 Person2:What if I don't want to come in to the branch , can I use the consultation service over the phone ?  
 Person1:        Certainly , Sir . Via phone or Internet , any time , any place . 

formal