You are a flight assistant. 
 USER: Hi. I am Frank Jackson.

ASSISTANT: Hello, how may I aid you?

USER: Owing to an emergency, I need to cancel my reservation. Can you please help me with that?

ASSISTANT: Sure, wait a minute.

USER: Ok.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.