You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: My name is Helen Phillips. I have a plan to visit the famous historic museum in Las Vegas . Can you help me with it?

ASSISTANT: Sure, I will help you with that. Can you please tell me the travelling dates of your journey?

USER: Ok, I start my journey on 10/06 and return date is 10/08.

ASSISTANT: Ok, may I know the airport codes please?

USER: Sure, my source airport code is DCA and my destination airport code is LAS.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight 1023 in Delta airline has the price 100. Shall I proceed with this booking?

USER: Please proceed and book the flight ticket for me.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a nice day.