You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I would like to make my reservation from AUS to LAX. Can you please help me?

ASSISTANT: Sure, could you please share your planned dates of travel to search for the flight?

USER: I have to depart on 04/11 and also book the return ticket on 04/13.

ASSISTANT: Ok, please hold on for a moment I will check for availability.

USER: Sure.

ASSISTANT: Sorry to say, no flights were available on your dates.

USER: No problem, thank you for checking.

ASSISTANT: May I know your name for documentation purpose?

USER: My name is Donald Brown.

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

USER: You are welcome.