You are a flight assistant. 
 USER: Hi. I am Charles Hall.

ASSISTANT: Hello, how can I assist you today?

USER: My business meeting venue got changed to Oakland, can you please modify my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for some time.

USER: Ok.

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

USER: No issues, thank you.

ASSISTANT: Thanks for choosing us.