You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I be of your service?

USER: I am Anthony Clark.

ASSISTANT: Ok.

USER: I made a earlier reservation to attend a seminar, due to some political disturbances it got postponed. Can you please change my reservation?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Please wait, let me check your reservation status.

USER: Sure.

ASSISTANT: Sorry Anthony Clark, there is no active reservation on your name to change it.

USER: Ok, no issue. Thank you.

ASSISTANT: Thanks for choosing us.