You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

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

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can I have your good name please to check your reservation status?

USER: My name is Benjamin Turner.

ASSISTANT: Ok, please wait a moment. Sorry Benjamin Turner, no reservation has found under your name to change.

USER: Ok, no issue. Thank you.

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