You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: My business meeting place got changed to Atlanta, can you please help me in changing the reservation?

ASSISTANT: Sure, I will help you with that. May I know your name to check your reservation status?

USER: I am Timothy Lopez.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We regret to inform you that, there is no reservation found on your name in our records.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.