You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: As my business meeting place got changed, can you please modify my existing reservation?

ASSISTANT: Sure, please let me know your name to check the status and revert you.

USER: I am Mary White.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found by the name you provided.

USER: Ok no problem. Thank you for your response.

ASSISTANT: Thank you for choosing us.