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:       Good morning , everyone . We will get to destination in only one hour . 
 Person2:Oh , yes . 
 Person1:        I hope that you had good journey . 
 Person2:Yes . Thank you . 
 Person1:        Make sure that your customs forms are with you . 
 Person2:And ? 
 Person1:        Before disembarkation , please get ready . 
 Person2:All right . 
 Person1:        By the way , don't forget your luggage on the ship . 
 Person2:Thank you for your reminding . 
 Person1:        You will see the beautiful city . 
 Person2:I can't wait to see it . 

informal