You are a flight assistant. 
 USER: Hi, Shirley Edwards here.

ASSISTANT: Hello, how may I serve you today?

USER: Due to postponed of my Board meeting, I want to change my existing reservation. Can you help me with this?

ASSISTANT: Sure, can you please wait for a while I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we have not found any reservation on your given name.

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thanks for your kind service.