You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Could you please book a flight ticket from AUS to LAS?

ASSISTANT: Can you please let me know your journey dates?

USER: My journey dates are June 19 and June 21.

ASSISTANT: Please let me know your connection limit.

USER: I need a direct flight.

ASSISTANT: Are there any more specifications in your journey?

USER: I want to depart in the morning.

ASSISTANT: May I know your name please?

USER: My name is Patricia Lewis.

ASSISTANT: Sorry to inform you that, we did not find any flights matching your requirements.

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

ASSISTANT: Thank you for approaching us.