Hi.
user
Hello. How can I help you?
assistant
Owing to an emergency, I want to change my existing reservation. Can you please help me with this?
user
Ok. Let me know your name to check for existing reservation.
assistant
Margaret Lopez here.
user
Please, wait for a while.
assistant
Ok.
user
Thank you for waiting, there is no reservation found on your name to change.
assistant
It's ok, thank you for checking.
user
Thank you for choosing us.
assistant