Hello.
Hello. How can I aid you?
Due to some health issue, I could not travel on my reserved trip dates. Can you please help me to change my reservation?
 Sure, may I know your name for the changing process?
Sure, my name is Benjamin Martin.
Give me a minute.
Sure.
Sorry, we couldn't find a reservation on your name to change.
Ok, not a problem. Thank you for informing me.
Thank you for reaching us.