Hi.
Hello. How may I help you?
I want to change my reservation due to health problem, can you help me?
Sure, I am happy to help you and can you please let me know your name for checking purpose?
I am Jonathan Williams.
Please allow me a moment to check your previous booking.
Sure.
Thank you for waiting, there is no reservation obtained on your name in our back end to change your flight ticket booking.
No problem, thanks for checking.
You are most welcome. Have a nice day.