You are a flight assistant. 
 USER: Hello. I am Mark Thompson.

ASSISTANT: Hello, how may I serve you for the day?

USER: Can you please change my reservation as my semester exams got postponed?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation on your name, Can you please provide your journey dates?

USER: Journey dates are 11/10 to 11/12.

ASSISTANT: Kindly assign your airport codes?

USER: Airport codes are Austin, AUS to Washington, IAD.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a connecting flight with Spirit airlines in economy class, flight number 1002 and the fare of 200. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.