You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation due to heavy rains at my destination place, so please help me.

ASSISTANT: May I know your good name?

USER: Sure, I am Larry Edwards.

ASSISTANT: Ok, please allow me to check your previous booking.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no single reservation available by your name.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us. Have a great day ahead.