You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you at this moment?

USER: I'm Virginia Carter. I am planning a trip to  AUS from LAX, could you please help me to book a flight?

ASSISTANT: Sure, I am happy to help you. Can you please provide me your travel dates?

USER: Sure, my journey dates are from 06/23 to 06/25.

ASSISTANT: Ok, please give me a moment, I will inform you flight details. Thank you for waiting. Sorry Carter, no flight has found as per your travel dates.

USER: That's very sad.

ASSISTANT: Thank you for reaching us.

USER: Thank you.

ASSISTANT: You are welcome, have a good day.