Hi.
user
Hello, how may I help you?
assistant
I would like to change my flight reservation as I have some urgent work at my office, can you please help me?
user
Sure, we are here to help you. May I know your name please?
assistant
My name is Rachel Campbell.
user
Sorry to inform you that there is no active reservation on your given name.
assistant
No problem, thank you for checking.
user
Thanks for reaching us, have a nice day.
assistant