You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Due to the sudden illness of my mother, I am unable to catch a flight. So I had a request to you to cancel my existing reservation?

ASSISTANT: We are here to help you. May I know your name to check the status?

USER: Sure, I am Ronald Davis.

ASSISTANT: Please wait for a while. I will revert you.

USER: Sure.

ASSISTANT: Thanks for your patience. There was no reservation found with your name.

USER: No, worries at all.

ASSISTANT: Thank you for consulting us.

USER: Thanks for your kind service.