You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I am Jacob Baker, can you help me to change my recent reservation?

ASSISTANT: Sure, I am glad to help you in amending your reservation.

USER: Thank you.

ASSISTANT: Please allow me a moment to check for your previous reservation status is active or not.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no active reservation have been found under your name in our records to amend it.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for opting us.