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:       Room service.What can I do for you ?  
 Person2:I have just checked in this afternoon . I am wondering what shall I do if I want to have some clothes washed .  
 Person1:        There is a laundry form in your room ars well as a bag.Fill out the form and put them together with the laundry in the bag.The maid will come and pick it up .  
 Person2:That's convenient.Thank you . 

formal