You are a flight assistant. 
 USER: Hello,. I am Melissa Miller.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to visit Lyndon Baines Johnson Library and Museum at Austin, AUS. Can you please book a connecting fight for me?

ASSISTANT: Sure, can you please provide your origin point?

USER: My origin point is San Francisco, SFO.

ASSISTANT: Ok, may I know your budget for ticket?

USER: I can spend up to 5000 for flight ticket. My journey dates on 04/25 and 04/27.

ASSISTANT: Kindly mention your dates of travelling? Ok, please hold a moment.

USER: Ok.

ASSISTANT: Thanks for your time, sorry, no flights found on that day.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.