You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: My mother told me to cancel her reservation because of an emergency. Can you please help me?

ASSISTANT: Sure, I will help you to cancel your mother reservation.

USER: Thank you.

ASSISTANT: May I know your mother name please?

USER: Sure, her name is Melissa Green.

ASSISTANT: Green, I did not found any reservation on the name of your mother name.

USER: No problem, thank you for checking.

ASSISTANT: My pleasure, have a nice day.