You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nichole Martin here.

ASSISTANT: How can I assist you?

USER: I want to book a flight reservation to meet my sister, can you find a flight from  PHX - DCA?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: My travelling dates will be from 12/20 to 12/22.

ASSISTANT: Ok, please be on hold for few seconds.

USER: Sure, take your time.

ASSISTANT: Hawaiian airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: Ok, please proceed with booking my reservation.

ASSISTANT: I have successfully booked your ticket with flight-1001, have a safe journey.

USER: Thank you for your great assistance.

ASSISTANT: Thank you for choosing us to serve you in ticket booking.

USER: Most welcome.