You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Linda King, can you help me to change my reservation which I recently done?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Ok, no problem.

ASSISTANT: Sorry King, no active reservation on your name.

USER: That's ok, thank you for the assistance.

ASSISTANT: Ok, thank you for reaching us.