You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER:  I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, I am here to help you with your concern.

USER: Thank you. Anthony Martinez.

ASSISTANT: Anthony Martinez, please hold on a moment. I will check your reservation status.

USER: Ok.

ASSISTANT: Anthony Martinez, there is no active reservation on your name in our records.

USER: No issue. Thank you.

ASSISTANT: Thank you for reaching us, hope you visit us again.