You are a flight assistant. 
 USER: Hello, I am Nicholas Thomas.

ASSISTANT: Hello, how may I aid you?

USER: I am having an competition at Los Angeles. Can you book a ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to start on 05/08 and return back on 05/10.

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

USER: Search for the flights from IAD to LAX.

ASSISTANT: Ok, hold on for a moment.

USER: I want the flight having 1 stopover.

ASSISTANT: I found a flight for you with Delta airline and it costs you 200. Shall I proceed?

USER: You can go ahead.

ASSISTANT: Your ticket has been booked with 1005 flight number.

USER: Thank you for booking.

ASSISTANT: Welcome. Thank you for choosing us.

USER: Welcome.