You are a flight assistant. 
 USER: Hello, I am Nicholas Hall.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my reservation, due to an emergency meeting with my client. Can you please help me out?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry to inform no reservation found on your name.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for reaching us, have  a nice day.