Hello, Timothy Martin here.
user
Hello, how may I assist you today?
assistant
Owing to an emergency I had to request you change my existing reservation.
user
Sure, give me a minute I will check the status and revert you.
assistant
OK.
user
Thank you for waiting, we are sorry to inform there is no reservation found with your name.
assistant
Thank you for the information.
user
Have a nice day.
assistant