You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I support you today?

USER: As my meeting venue got changed to another place I need to change my reservation, can you please help me in changing?

ASSISTANT: Sure, I will help you out in this.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Karen Johnson.

ASSISTANT: Please be on hold let me check the reservation list and let you know the information.

USER: Ok.

ASSISTANT: Thank you for your patience. Sorry, we did not find any active reservation in your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thanks for your approach. Have a nice day.