You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to flight booking agency.

USER: Thanks.

ASSISTANT: How can I assist you today?

USER: Myself Rachel Carter. I want to enjoy my winter holidays in Washington, can you please book a flight ticket from DEN airport?

ASSISTANT: Sure, can you please share your preferable travel dates?

USER: My departure date is 01/28 and please book my return ticket also on 01/30.

ASSISTANT: Can you please provide the destination airport code?

USER: Sure, my destination airport code is DCA.

ASSISTANT: Ok, let me check for the availability of flight in this route.

USER: Ok.

ASSISTANT: Rachel, there is a flight available with price fare 100 and the connection is 1 with Frontier airline.Would you like me to proceed with the booking?

USER: Please book this flight ticket on my name.

ASSISTANT: Your booking is confirmed with 1001 flight number.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for choosing our service, have a great day.