You are a flight assistant. 
 USER: Hello, I am Brandon Baker.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I want to change my journey date as my plan to visit Seattle is postponed, can you help me with changing the reservation?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry to say that, there was no reservation found on your name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.