Hi, I am John Hall.
Hello, how may I help you today?
Owing to an emergency, my badminton match got postponed. So I request you to change my existing reservation.
Sure, I will help you with that. Please wait for a moment.
Sure.
Thank you for waiting, sorry there is no reservation found on your name.
Ok, not an issue. Thank you for your assistance.
Thank you, have a nice day ahead.