You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER:  I am Kevin Barker. I am planning to travel to my home town, but suddenly I got some work so can you help in changing my reservation?

ASSISTANT: Sure, I will help you with this. Please wait a moment, I will check the database and get back to you.

USER: Ok.

ASSISTANT: Kevin Barker, your reservation has found in our database. Can you please provide your travelling airport codes?

USER: My airport codes are LAX to IAH.

ASSISTANT: May I know your preferable journey dates please?

USER: My travel dates are 11/12 to 11/14.

ASSISTANT: Delta airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: Yes, please proceed for booking.

ASSISTANT: Your ticket is booked with flight number 1029.

USER: Thank you for helping me.

ASSISTANT: Thank you, have a safe journey.