You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: Can you please help me in changing my reservation as my meeting got postponed?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: For changing, we need to check your reservation status. So, please send me your name.

USER: Please check the reservation on the name of Emily Thomas.

ASSISTANT: Ok, please be on hold for a while. I will check with it and get back to you.

USER: Ok.

ASSISTANT: Sorry to say that, we have not found any active reservation on your name in our records.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us, have a good day.