You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Sure, please provide me the name to check for the status.

USER: Christopher Wilson here.

ASSISTANT: Please be on hold.

USER: Sure.

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

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.