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

ASSISTANT: Hello, how may I aid you today?

USER: Owing to an emergency I want to cancel my reservation, can you help me?

ASSISTANT: Sure, we are here to help you. Please wait a minute.

USER: Sure.

ASSISTANT: Sorry to say that no reservation found on your given name.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for opting us.