You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Samantha Davis here.

ASSISTANT: How can I assist you today?

USER: I was about to board a flight next week but due to health reasons I will be unable to catch that flight. So please cancel the flight reservation?

ASSISTANT: Sure, I will help you on that.

USER: Ok.

ASSISTANT: Please give me a moment.

USER: Yes, take your time.

ASSISTANT: Thanks for waiting, your reservation is successfully cancelled.

USER: Thanks for your help.

ASSISTANT: Welcome, have a great day.