You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Lisa Davis. I would like to book a ticket to Denver, can you please help me out?

ASSISTANT: Sure, I can assist you in booking flight ticket. Could you please mention your travel dates for booking flight ticket?

USER: I am travelling on these dates 03/27 and 03/29.

ASSISTANT: May I know your preferable airport code names?

USER: I am flying from LAX to DEN.

ASSISTANT: Ok, please hold on a moment.

USER: Make sure my connection limit is 0.

ASSISTANT: Sure. Sorry there is no direct flights available in this route as per your requested dates.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.