Hello.
Hello, how may I serve you at this moment?
Owing to an emergency,  I need to cancel my previous flight ticket booking. Can you please help me?
Sure, I will help you. Please wait for a moment.
Thank you for accepting my request.
May I know your name?
My name is Andrew Edwards.
Sorry, there is no reservation existing on your name.
No problem with that one, thank you for checking my reservation.
You are welcome, have a nice day.