You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I want to give a sudden surprise to my mother, so I want to book a ticket from DCA.

ASSISTANT: That's nice, I will help you in booking flight ticket. May I know your destination airport code name?

USER: My destination airport code is LAS.

ASSISTANT:  Will you please inform your travelling dates for flight ticket reservation?

USER: My travel dates are from 06/01 to 06/03.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: I found a flight ticket, airline is Delta and flight number is 1004. Shall I book this flight ticket for you?

USER: Please book my ticket with the name of Donald Phillips.

ASSISTANT: Sure. Your flight ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.