You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Due to the sudden illness of my mother, I am unable to catch a flight. So I want you to cancel my recent reservation, can you help me out?

ASSISTANT: Sure, may I know your good name please?

USER: Sure, I had a reservation with name Sandra Jackson.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, no worries at all. Thanks for your kind service.

ASSISTANT: Thank you for opting us.