You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I support you today?

USER: Due to heavy rainfall, I couldn't travel out. Can you please cancel my reservation?

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: May I know your good name?

USER: My name is Nicholas Allen.

ASSISTANT: Sorry Allen, no reservation found under your name in our database.

USER: Its ok, thank you for the information.

ASSISTANT: Welcome, have a nice day.