You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you aid me in booking a flight ticket from DCA to LAS?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I am planning to start on Apr 10th and return back on Apr 12th.

ASSISTANT: Ok, do you have any specifications?

USER: I want to depart from my source in morning time.

ASSISTANT: I found a flight for you with Hawaiian Airlines and it costs you 100. Shall I proceed to reserve a seat in this direct flight?

USER: Book it on the name Kevin Allen.

ASSISTANT: Your ticket has been booked with 1016 flight number.

USER: Thank you for the support.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.