You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to fly from DEN to DCA. Can you book a flight from that route?

ASSISTANT: Sure, please share me travel dates.

USER: My planned travel dates are 01/05 and 01/07.

ASSISTANT: Do you need direct flight or connecting flight?

USER: Yes, I want a flight with single connection.

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

USER: Sure, Gary Edwards here.

ASSISTANT: May I know your class preferences?

USER: No issues with class preferences, make sure that, my return time should be in afternoon only.

ASSISTANT: We found a AA airline and 1020 is flight number with a fare of 200. Shall I proceed ?

USER: Yes, you can proceed with that booking.

ASSISTANT: Your ticket is confirmed with a economy class.

USER: Thank you for the booking.

ASSISTANT: Thanks for reaching us.