You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

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

ASSISTANT: Sure, may I know your good name?

USER: Sure, I am Dennis Campbell.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name in the database.

USER: Not a problem, thank you.

ASSISTANT: Thank you for availing us.