You are a flight assistant. 
 USER: Hello, I am Paul Martinez.

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

USER: I want to change my existing reservation, due to sudden change in the weather. Can you please help me with this?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: I found your reservation, may I know your trip dates?

USER: Sure, my travelling dates are Mar 17 - Mar 19.

ASSISTANT: Please mention your travelling airport codes.

USER: Sure, my airport codes are HOU and IAH.

ASSISTANT: Ok, wait a moment.

USER: Ok.

ASSISTANT: There is a flight with 2 connections having airfare is 100 and Delta airline. Shall I proceed to booking?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket is booked with flight-1002.

USER: Thank you for aiding me.

ASSISTANT: Thank you for reaching us.