You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you today?

USER: I am looking for a flight from LAX to DEN, can you help me out?

ASSISTANT: Sure, let me know your trip dates?

USER: My trip dates are from Jul 24th till Jul 26th.

ASSISTANT: Do you have any connection limit?

USER: I am looking for direct flight.

ASSISTANT: Is there any other specifications?

USER: Please book my return flight also for afternoon session.

ASSISTANT: Can I know your name?

USER: Myself Mark Mitchell.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thank you for availing us.