You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from Washington, IAD to Washington, DCA as a business trip.

ASSISTANT: Ok.

USER: Can you do the reservation?

ASSISTANT: Sure, may I know your trip dates?

USER: Journey dates are 11/16 and 11/18.

ASSISTANT: May I know your good name for further process?

USER: Nancy Mitchell here.

ASSISTANT: No flight found on your journey dates.

USER: No problem, I will check with another airline.

ASSISTANT: Thank you for choosing us, have a nice day.