You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Ok, please can I know your name to check for the reservation active state?

USER: My reservation was done under the name Mary Wright.

ASSISTANT: Ok, thank you for waiting. Sorry as per the reservation records there is no reservation been found to amend.

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

ASSISTANT: Thank you for choosing our agency.