You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, what can I do for you today?

USER: Recently I made a reservation for a trip to Washington, but unfortunately my friend met with an accident. So, I want to cancel my reservation. Can you help me with that?

ASSISTANT: Ok, I can help you with that.

USER: Thank you.

ASSISTANT: May I know your name to check your reservation?

USER: Sure, Cynthia Jones is my name.

ASSISTANT: Sorry, we did not find any reservation on your name to cancel.

USER: Ok, not a problem. Thanks for your quick response.

ASSISTANT: Thanks for approaching us, have a nice day.