You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

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

ASSISTANT: Sure, let me check the current status and revert to you.

USER: Sure, take your time.

ASSISTANT: We could not find any reservation active by the name you mentioned above.

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

ASSISTANT: Thank you for choosing us.