You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can I know if it is possible to change my reservation which I had done recently?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: May I know your name please to check your reservation status?

USER: Ok, please check for the name Gary Lopez.

ASSISTANT: Gary Lopez, I have found your reservation. May I know your airport codes please?

USER: Ok, please note my new airport codes LGA is my source airport and LAS is my destination airport code.

ASSISTANT: Can I have your planned travel dates please?

USER: Ok, please amend for the dates Feb 15 and Feb 17.

ASSISTANT: Do you have any connection preference?

USER: Ok, confirm a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: I found an economy class in Southwest airlines with fare 200 and it is a connecting flight. Can I book your ticket?

USER: Ok, please proceed.

ASSISTANT: Ok, your booking is confirmed with flight number 1006.

USER: Thank you for the help in amendment of my reservation.

ASSISTANT: Thank you for reaching us.