You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I aid you today?

USER: My name is Donna Jones. I would like to visit Washington. Can you help me for booking a flight ticket from LAX to DCA?

ASSISTANT: Sure, please share me your trip dates.

USER: My travelling dates are Mar 19 and Mar 21.

ASSISTANT: Is there any class preferences for you?

USER: Any class is fine for me.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a single connecting flight.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: My departure time is morning.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: We found a Spirit airline and 1008 is flight number with a fare of 100. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us.

USER: Welcome.