You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Cynthia Harris.

ASSISTANT: How can I assist you today?

USER: I am planning to visit Chicago, ORD. Can you please book me a ticket from Washington, DCA?

ASSISTANT: Sure, I'll definitely help you with that. May I know your preferable travel dates please?

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

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Southwest airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: Please reserve my ticket with this airlines.

ASSISTANT: I have successfully booked your ticket with flight-1029, have a safe journey.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.