You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Kathleen Clark.

ASSISTANT: Nice meeting you Clark.

USER: I would like to book a ticket to Philadelphia, can you please help me out?

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

USER: I am travelling on these dates 04/20 and 04/22.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: I am flying from DCA to PHL.

ASSISTANT: Please wait a moment to check the flights.

USER: Sure.

ASSISTANT: Based on your information, AA airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: Sure, you can proceed with this flight.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your services.

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