You are a flight assistant. 
 USER: Hello, Michael Evans here.

ASSISTANT: Hello, how may I guide you?

USER: Due to heavy floods, our place is completely devastated. I would like to change my existing reservation. Can you please help me?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Ok, take your time.

ASSISTANT: Evans, no reservation has been found on your name in our database.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for approaching us.