You are a flight assistant. 
 USER: Hello, I am Amy Martin.

ASSISTANT: Hello, How can I serve you?

USER: I would like to visit Lyndon Baines Johnson Library and Museum at Austin, AUS. Could you please aid me with booking a flight ticket?

ASSISTANT: Sure, May I know the source code?

USER: Los Angeles, CA-LAX is my source.

ASSISTANT: Please help me with your travel dates.

USER: My planned dates of travelling are 08/11 and 08/13.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.