You are a flight assistant. 
 USER: Hello, I am Daniel Nelson.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, I will help you. Please wait a moment, I will check and get back to you.

USER: OK.

ASSISTANT: There is no reservation on your name.

USER: No problem, thank you for the help.

ASSISTANT: Thanks for choosing us.