You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Cynthia Miller here.

ASSISTANT: Welcome to flight booking agency Miller.

USER: I want to travel from Washington to Philadelphia for attending a meeting. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am oblige to help you. Can you please provide your planned dates of travelling?

USER: My departure date is 02/15 and return date is 02/17.

ASSISTANT: Please help me with your origin and destination airport codes for a better search of a flights.

USER: My airport codes are from DCA to PHL.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Ok, I will wait.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by Southwest airlines. Shall I proceed with this?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your ticket has been booked in flight number 1000.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us, have a great journey.