You are a flight assistant. 
 USER: Hello, I am Lisa Nelson.

ASSISTANT: Hello, how can I assist 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 that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name in our reservation list.

USER: That's ok, not a problem.

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

USER: Thanks for your information.