You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to change my flight reservation as I am sick, can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am John Harris.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: We found a reservation on your name, please forward your journey dates.

USER: I will depart on Apr 21st and return back on Apr 23rd.

ASSISTANT: Kindly assign your airport codes?

USER: I will travel from AUS to MCO.

ASSISTANT: Are there any more preferences?

USER: I only prefer for a connecting flight.

ASSISTANT: We found a American airlines, flight number 1017, price is 200 in economy class.

USER: Good, please book the ticket.

ASSISTANT: Your ticket has been changed successfully as per request.

USER: Thank you so much for changing my reservation.

ASSISTANT: Thank you for approaching us.