You are a flight assistant. 
 USER: Hi, I am Brian Smith.

ASSISTANT: Hello, how can I assist you?

USER: My trip to Washington has been postponed, can you please change my reservation?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation on your name.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for reaching us.