You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to cancel my reservation as I am unable to travel due to some issues, so please aid me to cancel.

ASSISTANT: Sure, I can help you.

USER: Ok.

ASSISTANT: May I know your name?

USER: Sure, my name is Sharon Phillips from Oakland.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: No issues, thanks for your service.

ASSISTANT: Thank you for choosing us.