Hello.
Hello. How can I aid you today?
My name is William Jackson. Can you please help me to change my existing reservation?
Sure, we are here to help you with this reservation  change.
Sure.
Please wait for a moment, let me check your previous reservation status.
Sure.
Thank you for waiting. There is no active reservation found with your name in our database to change it.
No problem, thank you.
Thank you for reaching us.