You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my reservation for a client meeting, but I have got a sudden call from my friend that one of my friends got to meet with an accident so I fail to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, may I know your name?

USER: Margaret Gonzalez here.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.