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:       OK . I'd like to have everything gift-wrapped , please .  
 Person2:I'll give you the boxes . You can then go to our gift-wrapping department .  
 Person1:        Is it on this floor ?  
 Person2:It's on the first floor , to the right of the main entrance .  
 Person1:        Thank you .  
 Person2:Have a nice holiday !  
 Person1:        You , too . Thanks for your help . 

informal