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:       Can you tell me what the date and time of our field trip is ? 
 Person2:We are leaving on our science field trip at 8 a . m . next Monday . Do you have something to write that down on ? 
 Person1:        Yes , I can write that on my calendar . 
 Person2:That will be on the second of December . Be there half an hour early to get your bags on the bus . Do you understand ? 
 Person1:        Yes , I understand . 
 Person2:The bus will bring you back 6 days later on December 8th . Is someone coming to get you ? 
 Person1:        No , I don't have a ride yet . 
 Person2:We will be leaving the campground at 5 in the evening and arrive at our campus at 8 p.m.Any more questions . 
 Person1:        How much will the trip cost ? 
 Person2:I put all of that information in the packet . I'll give you another copy if you need one . See you on Monday ! 

formal