Hello,.
user
Hello, How may I help you?
assistant
Owing to an emergency  I need to change my existing reservation. Can you please help me out with this?
user
Ok, Can you please provide me your name?
assistant
Sure,I am Andrew Carter.
user
Please wait for a moment, I will get back to you with the information.
assistant
Ok.
user
Thanks for waiting, We did not find a reservation on your name.
assistant
Ok. No issue. Thank you for your information.
user
Thank you, Have a great day.
assistant