You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you at present?

USER: I need to book a direct flight from Orlando to visit all the places in Washington, so please help me in booking.

ASSISTANT: Sure, Let me know your class preference.

USER: Sure, I am okay with any class.

ASSISTANT: Kindly please help me with your destination airport code.

USER: My destination airport code is DCA.

ASSISTANT: Ok, When you are planning to travel?

USER: My preferable dates are on Apr 27th to 29th.

ASSISTANT: May I know your depart and arrival timings?

USER: I would like to return in afternoon time.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We are glad to inform you that, we found a flight in 1016 Delta Airlines with a connected flight and the cost is 100 in economy class. Can I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: On whose name, Shall I reserve your ticket?

USER: Sure, my name is Kenneth Adams.

ASSISTANT: Sure, your booking has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching our service.