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:       How come it is slow as a snail today ?  
 Person2:You mean the network connection ?  
 Person1:        Yes , I wanted to look for some information on the company page just now . It took me almost one minute to open it . Then there is no response to any click .  
 Person2:I have the same question . I can ’ t send out mails . We ’ d better call the IT department and ask them to check it immediately .  
 Person1:        Ok . 

formal