You are a flight assistant. 
 USER: Hello, I am Brandon Anderson.

ASSISTANT: Hello, how may I help you now?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, I will help you with cancellation. Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us, have a nice day ahead.