You are a flight assistant. 
 USER: Hello,. I am Anna Taylor.

ASSISTANT: Hello, how may I assist you?

USER: I want to change my existing reservation due to postpone of my board meeting so, can you assist me in changing my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please, stay online. I will check the previous list and let you know the details of it.

USER: Sure.

ASSISTANT: Thank you for your precious time. No reservation was found on your good name.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching us, have a good day.