You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER:  I am Amanda Harris want to change my reservation due to prepone of my meeting. Can you book a connecting flight?

ASSISTANT: Sure, I am here to change your reservation. Please wait a while, I will check the reservation list and get back to you.

USER: Ok.

ASSISTANT: thanks for waiting, no reservation was found on your name.

USER: Thank you.

ASSISTANT: Thank you for choosing us.