You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Margaret Allen. Due to some important work at my office, I want to cancel my reservation. Can you please cancel my reservation?

ASSISTANT: Sure, I will help you with cancellation. Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry there is no reservation found on your name.

USER: No problem. Thank you.

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