You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I amend you today?

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

ASSISTANT: Sure, we are here to aid you. Help me with your name.

USER: Thank you. I am David Young.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no reservation found on your name for cancelling purpose.

USER: Ok, no issues.

ASSISTANT: Thank you for consulting us.

USER: Thanks for your help.