You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Christine Moore.

ASSISTANT: How can I assist you at this moment?

USER: I want to book a flight ticket to attend Jazz event in Austin, TX - AUS.

ASSISTANT: Ok.

USER: Can you book a flight ticket from Los Angeles, CA - LAX?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Ok,  may I know your planned journey dates?

USER: I want to travel on 03/27 and need to catch return flight on 03/29.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for your valuable time.

USER: Ok.

ASSISTANT: We are sorry to notify you that, no flights are available on your journey dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.