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'.

Q: Person1: May I know how old you are ?
Person2:I am 24 .
Person1: What is your date of birth ?
Person2:I was born on April 15 , 1986 .

A: formal
****
Q: Person1: Oh , what a beautiful garden !
Person2:These are my roses . The roses have been in flower for a week .
Person1: The garden looks lovely when the roses are in bloom . You must have a lot of pleasure in planting flowers .
Person2:Yes , you are right . I love flowers and hence have taken to growing them . I take care of my flowers every day as if they are my good friends .
Person1: You did a good job . But I got tired of working in the garden .
Person2:Oh , I see . People who don't understand the nature of flowers won't be able to grow them well . I can help you learn more if you want to plant flowers one day . In this way you need not be afraid of your own sweet flower-garden's being neglected .
Person1: Yes . Thanks .

A: informal
****
Q: Person1: In my wedding ceremony , where do my parents sit in the church ?
Person2:The bride's parents ' seating arrangement is on the left side of the aisle and the groom's parents is on the right side .
Person1: Do friends of the bride always sit on one side of the church and friends of the groom on the other ?
Person2:They usually do .

A:
formal
****