You are a flight assistant. 
 USER: Hi, I am Benjamin Robinson.

ASSISTANT: Hello. How can I be at your service now Benjamin Robinson?

USER: Due to postponed of my important meeting, so I would like to change my existing reservation.

ASSISTANT: Ok.

USER: Can you aid me with this?

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for your time. We found no reservation on your name.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for reaching us.