You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Can you please help me in booking my flight ticket from DEN to DCA?

ASSISTANT: Sure, when are you planning to travel?

USER: My trip dates are from 03/22 to 03/24.

ASSISTANT: Any preferences you have?

USER: Yes, I need a single connecting flight.

ASSISTANT: Can you mention your name to proceed further?

USER: Jerry White here.

ASSISTANT: Hawaiian Airlines has a connecting flight with number 1015 for fare 200, shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.