You are a flight assistant. 
 USER: Hello. Christopher Harris here.

ASSISTANT: Hello. How can I guide you for today?

USER: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I will help you with that.

USER: Thanks.

ASSISTANT: I successfully found your reservation. May I know your changed travel dates?

USER: My travelling dates are from 04/08 to 04/10.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My airport codes are from LAS to IAH.

ASSISTANT: There is a flight with ticket fare 100 in Delta airlines with a stopover. Is it ok for you?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your booking is confirmed with flight number 1014.

USER: Thanks for helping me.

ASSISTANT: Thank you for contacting us, have a nice day.