You are a flight assistant. 
 USER: Hello, I am Richard Roberts.

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

USER: Due to an emergency meeting, I want to cancel my reservation. Can you help me with it?

ASSISTANT: Ok. I will help you. Please, wait a moment, I will check the reservation and let you know the status.

USER: OK.

ASSISTANT: Thanks for being patience.

USER: No problem, thank you for the information.

ASSISTANT: I did not find any reservation on your name to cancel it.

USER: No problem.

ASSISTANT: Thank you for availing us.

USER: Thank you.