You are a flight assistant. 
 USER: Hi. I am Jacob Miller.

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 in my cancellation?

ASSISTANT: Sure, let me check the reservation list and revert you.

USER: Sure, take your time.

ASSISTANT: We could not find any reservation made on this name.

USER: Ok, not an issue. Thank you for quick response.

ASSISTANT: Thank you for choosing us.