You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Alexander Phillips here. I would like to change my recent reservation, can you help me with this?

ASSISTANT: Sure, I will help you in amending your reservation.

USER: Thank you.

ASSISTANT: Please allow me a moment to check for your reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no active reservation have been found under your name in our database to amend it.

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

ASSISTANT: Thank you for contacting us.