Hello.
user
Hello, how may I serve you at this moment?
assistant
I would like to do some modifications in my existing reservation, can you help me in that/.
user
Sure, I will help you. Please wait for a moment.
assistant
Thank you.
user
May I know your name?
assistant
Sure, myself Ruth Roberts.
user
Sorry, there is no reservation existing on your name.
assistant
That's ok, no problem. Thank you for the information.
user
You are welcome, have a nice day.
assistant