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

ASSISTANT: Hello, By what way can I assist you today?

USER: I am unable to travel to airport to board my flight due to severe accident in my way to airport. Can you help me to cancel my reservation?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Please wait, let me check and get back to you.

USER: Sure.

ASSISTANT:  Thanks for your time, no reservation found on the name of Daniel Miller.

USER: Ok, no issues. Thanks for your quick response.

ASSISTANT: Thanks for choosing us.