You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you at this moment?

USER: Need your assistance to cancel the reservation.

ASSISTANT: Sure, I am here to assist you. May I know your name for cancellation purpose?

USER: Please cancel this reservation with the name of Edward Johnson.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry Edward Johnson, no reservation found on your name.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.