You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Amy Gonzalez.

ASSISTANT: How may I render you today?

USER: I made a earlier reservation to attend a seminar, due to some issues it got postponed.

ASSISTANT: Ok.

USER: Can you please change my reservation?

ASSISTANT: Sure. Please wait for a minute, I will check and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation is found on your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for opting us, Have a nice day.