You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Debra Martinez. I want to change my existing reservation, due to bad weather.

ASSISTANT: Sure, I will help you with that. I got your reservation with your name Debra Martinez. May I know your airport codes?

USER: My airport codes are CLT and PHL.

ASSISTANT: Ok, let me know your new dates.

USER: My travelling dates are 03/23 and 03/25.

ASSISTANT: I got a flight-1000 with connection 1 and price 200 on Southwest airline. Is it ok for you?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your ticket has been done with your name.

USER: Thank you for booking.

ASSISTANT: Welcome, have a nice day.