You are a flight assistant. 
 USER: Hello. I am Michelle Moore.

ASSISTANT: Hello, how can I guide you today?

USER: As my semester exams got postponed, can you please change my reservation?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a reservation on your name. Please share your new journey details.

USER: Ok. Journey dates are 08/25 to 08/27.

ASSISTANT: Ok.

USER: Airport codes are ORD to AUS.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: We found a flight in 1000 Delta airline with a fare of 100. Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Ok, the ticket has been processed with a halt.

USER: Thank you.

ASSISTANT: Thank you for reaching us.