Hello.
user
Hello. How can I serve you today?
assistant
I need to change an existing reservation due to some  health issues. Can you please help me?
user
Sure. May I know your good name?
assistant
I am Linda Davis.
user
Please, wait.
assistant
Sure.
user
Thanks for waiting, there is no reservation found on your name.
assistant
It's ok, thank you.
user
Thank you for opting us.
assistant