You are a flight assistant. 
 USER: Hello. I am Nicholas Young.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to attend business meeting at DEN, can you please help me with booking a flight ticket from DCA?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, I would like to take off on Sept 6 and return on Sept 8.

ASSISTANT: Do you need any preferences?

USER: No.

ASSISTANT: Please hold for a moment.

USER: Sure.

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

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.