You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best assist you today?

USER: This is cynthia Carter. I want to book a flight ticket  to attend sports events. Can you please help me in that?

ASSISTANT: Sure, I am gleeful to assist you. May I know your airport codes?

USER: My origin code is Las Vegas, NV - LAS and destination code is Washington DC - IAD.

ASSISTANT: When are you planning to make your journey?

USER: My trip dates are 03/11 - 03/13.

ASSISTANT: Ok, please stand by.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a connected flight with UA airlines, flight number 1001 and the fare of 100. Shall I proceed?

USER: You can reserve it for me?

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.