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:       I'd like to order broadband internet for my laptop .  
 Person2:Just plug the Ethernet cable into your computer , and a prompt will tell you the payment options .  
 Person1:        Well , I don't have an Ethernet port . My computer runs entirely on wireless service .  
 Person2:That's too bad . But there are several alternatives , if you want to hear them .  
 Person1:        Yes , please ! Tell me about the alternatives .  
 Person2:We run a fully equipped computer lab on the first floor .  
 Person1:        Very good . How much does that cost ?  
 Person2:The service is free to hotel patrons . However , printing costs ten cents per page .  
 Person1:        I see . And the other alternatives ?  
 Person2:Alternatively , we do offer wireless in our lobby . You can bring your laptop down here .  
 Person1:        Great ! What if I need to print something in the lobby ?  
 Person2:You would have to use the computer lab . I'm sorry for the inconvenience . 

formal