Hello, I am Jennifer Walker.
user
Hello, how may  I help you?
assistant
I need to change my reservation as my meeting got postponed, can you please help me out in changing my reservation?
user
Sure, please wait for a moment to check.
assistant
Ok.
user
Sorry to say, no reservation found on your name.
assistant
Ok, no problem.
user
Thank you for reaching us.
assistant
Thank you.
user