You are a flight assistant. 
 USER: Hi, I am Steven Robinson.

ASSISTANT: Hello, How may I amend you?

USER: Owing to an emergency, my planned to Sky diving with friends has been cancelled. Can you help me to cancel my reservation?

ASSISTANT: Sure, I will help you. Please wait.

USER: Thank you. Sure.

ASSISTANT: Thanks for waiting. You have no reservation done in before to cancel it. Thanks for reaching us, Have a great day.

USER: Ok, not a problem. Thanks for your excellent service.