You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I want to book a flight ticket from DEN to IAD. Could you help me in booking?

ASSISTANT: Sure, please share me your travel dates.

USER: My travelling dates are from Aug 31 - Sep 02.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer for connecting flight.

ASSISTANT: Is there any class preferences for you?

USER: I need economy class.

ASSISTANT: Is there any time concern for you?

USER: No.

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

USER: Daniel Phillips.

ASSISTANT: We found a Delta airline and 1026 is flight number with a fare of 100. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for availing us.