You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my recent reservation due to some family problems. Can you please help me with this?

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: Thank you. Margaret Gonzalez.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thanks for contacting us.