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

ASSISTANT: Hello, how may I support you for the day?

USER: On an emergency I want to cancel my reservation due to sudden fallen sick.

ASSISTANT: Sure, I will help you with cancellation.

USER: Thanks.

ASSISTANT: Please wait for a minute.

USER: OK.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: No problem with that. Thanks for the information.

ASSISTANT: Thank you for reaching us.