You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amanda Hernandez.

ASSISTANT: How may I guide you?

USER: I would like to reserve a flight ticket from EWR to AUS.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to start my journey on 11/05 and return back on 11/07.

ASSISTANT: Please hold on for a moment.

USER: Ok, please take your time.

ASSISTANT: I am sorry, there are no flights available.

USER: Ok, no problem. Thank you for your helpful service.

ASSISTANT: Thank you, have a good day.