You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Edward Edwards, planning to have a round trip in Washington, can you please book me a ticket from DCA to IAD?

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates?

USER: My planned dates of journey are from 06/10 to 06/12.

ASSISTANT: Please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: There is a connecting flight 1016 of UA airlines, shall I proceed?

USER: Please book my ticket with this flight.

ASSISTANT: Ok, your booking is done.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome.