You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Cynthia Green.

ASSISTANT: How can I assist you today?

USER: I am looking for a flight from DCA to LAS, can you help me in booking?

ASSISTANT: Sure, I can help you with that. May I know your planned departure and return travel dates please?

USER: Sure, my planned travel dates are June 06 and June 08.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Delta airlines is having a flight on that route with ticket fare of 100, shall I proceed for booking?

USER: That's fine, please proceed in booking with this flight.

ASSISTANT: I have successfully booked your ticket with flight-1005, have a safe journey.

USER: Thank you for the service.

ASSISTANT: Thank you for choosing us.