You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Brenda Harris. I want to change my existing reservation, due to heavy rain fall. Can you please help me?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no reservation on your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you.