Hello.
Hello, how may I help you?
I need to change my existing my reservation due to some health issues I  am unable to catch the flight, can you help me in changing my ticket?
May I know your name?
My name is Joshua Rodriguez.
Please wait for a moment.
Ok.
Sorry, there is no reservation found on your name.
It's ok, thank you for searching.
You are welcome. Thank you for reaching us.