You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I support you?

USER: I am Frank Jackson. I want to change my existing reservation due to postpone of my document verification in college. Can you aid me with this?

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Please wait for a few minutes, to check with the reservation on your name to change it.

USER: Sure, I will wait.

ASSISTANT: Thank you for your time, we found a reservation on your name. Please provide your new journey dates.

USER: My new travel dates are 08/12 - 08/14.

ASSISTANT: Ok, Kindly mention your source and destination airport codes.

USER: My source airport code is Orlando, FL - MCO and destination airport code is Seattle, WA - SEA.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, There were no flights found with your given details.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for choosing us.