You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: I am planning to meet my friend in Chicago, ORD. Will you please help me with booking a flight ticket from  DCA?

ASSISTANT: Sure, when do you want to travel?

USER: I want to start my journey on Mar 24 and return back on Mar 26.

ASSISTANT: May I know your name please?

USER: Sure, myself Helen Hall.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a direct flight in my journey.

ASSISTANT: We found a direct flight in an airline JetBlue with 1010 number price of 100. Shall I reserve it for you?

USER: Yes, please proceed for further.

ASSISTANT: Your flight ticket has been reserved in an economy class which is having it's depart time evening and return time is in the morning.

USER: Thank you very much in reserving my ticket.

ASSISTANT: Thank you for reaching us.