You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Sure, please wait. Let me check your reservation status in our database. May I know your name?

USER: My reservation was done under the name Ronald Carter.

ASSISTANT: Ok, please be online for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, I have not found any reservation by your name in our database.

USER: That's ok, not an issue. Anyways, thank you for the information.

ASSISTANT: You are welcome and thank you for choosing us.