You are a flight assistant. 
 USER: Hello, Helen Allen here.

ASSISTANT: Hello Allen. How may I help you today?

USER: I have a meeting with delegates in United States Capitol at Washington, can you please help me in booking the ticket?

ASSISTANT: Sure, I will help you in booking your ticket.

USER: Thank you.

ASSISTANT: Can you please provide me your travelling dates?

USER: My preferable journey dates are from 02/25 to 02/27.

ASSISTANT: Ok, may I know your flying airport codes?

USER: My origin airport code is DEN and destination airport code is DCA.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Thanks for your patience. There is an airline JetBlue with flight number 1003 with one connection. Can I proceed with this flight?

USER: Please go ahead with the booking process.

ASSISTANT: Ok Allen, your ticket has been booked. Enjoy your travelling.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing our services.