You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: Recently I made a reservation to enjoy the sports meet at Washington, but my manager assigned a work on that dates, so I need to cancel my reservation. Can you please help me in cancellation?

ASSISTANT: Sure, we are here  to help you.

USER: Thank you.

ASSISTANT: May I know on which name the ticket has been reserved?

USER: Reservation has been done on the name of Anna Evans.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we are sorry to notify that we could not find any reservation to cancel.

USER: Ok, no problem. Thank you.

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