You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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.

USER: Thank you.

ASSISTANT: Can I have your name please to check the status of your reservation?

USER: My name is Robert Davis.

ASSISTANT: Please hold on a moment.

USER: Sure, take your time.

ASSISTANT: Robert Davis, no reservation has been found on your name in our records.

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

ASSISTANT: Thank you for approaching us.