You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

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

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Thank you. Ok.

ASSISTANT: Sorry  Williams Hernandez, there is no active reservation on your name in our database to cancel.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.