You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I need to change my reservation as my Interview got postponed, so help me in this.

ASSISTANT: Ok, can you please tell me your name?

USER: Sure, my name is Charles Gonzalez.

ASSISTANT: Ok, please wait for a while I will check and let you know about your reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry, I did not find any active reservation on your name to change.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for reaching us.