You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket from ATL to DCA?

ASSISTANT: Sure, please share me your trip dates.

USER: I would like to depart on Apr 21st and return on Apr 23rd.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I am looking for a connecting flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: I am Donna Walker.

ASSISTANT: May I know your class preferences?

USER: I have no other preferences.

ASSISTANT: We found a Hawaiian airline and 1001 is flight number with a fare of 100. Shall I proceed?

USER: Yes, please confirm the booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for opting us.