You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you with today?

USER: I'm Stephanie Perez.Actually I have already done my reservation for my board meeting. But, now my location of the meeting got changed.Could you please change my existing reservation?

ASSISTANT: Sure, I can help you with that. Please allow me a moment to check the details.

USER: Ok.

ASSISTANT: Stephanie, I have checked and see that there is no reservation found under your name.

USER: Ok, thank you for your information.

ASSISTANT: You are welcome. Thank you for contacting us.