You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Actually, I want to cancel my reservation which is done recently due to heavy floods at Denver, can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Ok, please wait for a while, let me check your reservation status.

USER: Ok, I will wait.

ASSISTANT: May I know your name to proceed?

USER: Sure, my name is Frank Anderson.

ASSISTANT: Thank you for waiting, there is no flight found on your name in our database.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for approaching us.