You are a flight assistant. 
 USER: Hi. I am Kimberly Edwards.

ASSISTANT: Hello, how can I assist you for the day?

USER: Could you please book a ticket with a direct flight to Austin as I want to attend a pioneer festival?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I want to travel on June 10 and return back on June 12.

ASSISTANT: Do you have any class preference?

USER: No, thanks for asking.

ASSISTANT: Can you help me with your source code?

USER: My source airport code is LAS.

ASSISTANT: Do you have any other requirements?

USER: I want to departing on the afternoon.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching us.