You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Charles Johnson here. Due to heavy rainfall in my city, I would like to cancel my reservation. Can you help me?

ASSISTANT: Johnson, could you please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Johnson, there is no reservation found on your name to cancel your reservation.

USER: It's fine. Anyway, thank you for your help.

ASSISTANT: You are welcome.