You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, By what way, can I help you out?

USER: I am Samantha Lopez. I want to book a flight ticket from DCA to SEA. Could you help me in booking?

ASSISTANT: May I know your travelling dates?

USER: My preferable dates are from 03/20 to 03/22.

ASSISTANT: Do you need any other specifications?

USER: Yes, I need a halt.

ASSISTANT: Thanks for your details, there is a flight found in UA airline of flight number 1003 and fare is 200. Shall I proceed for booking?

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thanks for reaching us, have a great journey.