You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service today?

USER: I am Gregory Parker. Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, we can help you. Please wait for a while, I will  check with your reservation status and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to inform you that, we hardly tried to find your reservation but, no reservation has been found on your name.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.