You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

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

ASSISTANT: Sure, may I know your name?

USER: My reservation was done under the name Rebecca Campbell.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found by your name.

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

ASSISTANT: Thank you for contacting us.