You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Angela Johnson. I need to amend my reservation, can you help me out?

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

USER: Thank you.

ASSISTANT: Please allow me a moment to check for the previous reservation status is whether active or not?

USER: Sure, take your own time.

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

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.