You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how exactly I can help you with?

USER:  Recently I had a reservation with the name of Brian Young, to attend for horse racing festival. I cannot attend there due to some health issues. Can you cancel my reservation?

ASSISTANT: Sure, I am grateful to help you. Please standby, I will revert to you.

USER: Ok, take your own time.

ASSISTANT: Thanks for waiting, I found a reservation with your name. Shall I proceed to cancel?

USER: Yes, please proceed to cancel.

ASSISTANT: Your flight reservation is cancelled.

USER: Thank you for your kind response.

ASSISTANT: Thank you for availing us, hope to serve you again.