You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I have to attend a seminar at Washington, can you please guide me with flight ticket booking?

ASSISTANT: Sure, I am here to help you with that flight ticket booking. May I know your preferable airport codes, please?

USER: Thank you for accepting my request and I want to start my journey from MCO location and I have planned to land on DCA location.

ASSISTANT: Can you please mention your planned travel dates?

USER: Sure, I want to departure on Sep 11 and I will recur back on Sep 13.

ASSISTANT: May I know your connection limit? Is there any class preference?

USER: I need a single drop in my journey. I can afford more for my ticket, so check with normal cost flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I want to return back in the afternoon time.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to say that, there are no flight found on this route as per your details.

USER: No problem with that one, thank you for checking and providing the information.

ASSISTANT: May I know your name please for documentation purpose?

USER: My name is Donald Roberts.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Welcome.