You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Michael Lee. Can you please aid me for booking from LAX to AUS?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are 3 and 5 on the month of April.

ASSISTANT: Please share your connection limit.

USER: I need a connected flight.

ASSISTANT: Do you have any specifications?

USER: My return time is evening.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: OK, thanks for your service.

ASSISTANT: Thank you for choosing us.