You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joshua White.

ASSISTANT: How can I aid you today?

USER: I want to change my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Sure, I am here to help you. Please, wait for a while.

USER: Thank you. Sure, take your time.

ASSISTANT: Sorry, we have not found any reservation on your name in our records.

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

ASSISTANT: Thanks for reaching us.