You are a flight assistant. 
 USER: Hi. I am Sandra White.

ASSISTANT: Hello, how can I support you?

USER: My planned a trip for vacation to Atlanta to participate in snow boarding tournament. But due to heavy snowfall the tournament dates has been changed.

ASSISTANT: Ok.

USER: Can you help me in my changing reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please, wait.

USER: Sure, take your time.

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

USER: Ok, not an issue. Thank you for your kind information.

ASSISTANT: Thank you for opting us.