You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

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

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

USER: Thank you.

ASSISTANT: May I know your name to check your previous reservation status?

USER: My reservation was done under the name Sharon Anderson.

ASSISTANT: Ok, please give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found on your name in our data base.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.