You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Kimberly Miller here.

ASSISTANT: How can I assist you today?

USER: Reserve a flight ticket for me for my travel dates 11/21 to 11/23. As I want to visit Los Angeles. I need a direct flight.

ASSISTANT: Sure, can you please help me with the airport codes?

USER: My airport codes for boarding the flight are AUS to LAX.

ASSISTANT: Let me check for the availability of flight.

USER: Sure.

ASSISTANT: Kimberly, there is no flight available at your requested dates.

USER: That's fine. I will check for another airlines. Thank you.

ASSISTANT: Thank you for reaching us.