You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: My name is Debra Evans.

ASSISTANT: Evans, how may I aid you?

USER: I want to visit my brother and come back, could you help me in booking the ticket?

ASSISTANT: Sure, please provide your dates of journey?

USER: It's from IAD to DCA. The dates of travel are 12/25 to 12/27..

ASSISTANT: Wait a moment to check the availability. There is a flight with Hawaiian airlines with flight number 1005, is it ok for you?

USER: Please book the ticket.

ASSISTANT:  Debra, your ticket has reserved to your landing location.

USER: Thank you for helping me out.

ASSISTANT: Thank you for contacting us.