You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am William Thompson. I need to change my recent reservation due to postpone of my favorite cricketer match. Could you please help me in doing that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait a minute, I will check the present status and get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting. We found a reservation on your name, can you please share your new planned travel dates?

USER: Sure, my planned travelling dates are 10/12 and return on 10/14.

ASSISTANT: Ok, can I know your airport codes for further process?

USER: My airport codes are JFK and DFW.

ASSISTANT: Thank you for providing your details.

USER: Ok, please check the best flight for me.

ASSISTANT: Sure, we found a flight with number 1000 and airline UA at a price of 100 with 1 connection. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Sure, your booking is done.

USER: Thank you.

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