You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I had planned to go on a trip, but it was postponed. Can you change my recent reservation?

ASSISTANT: Sure, may I know your name to proceed?

USER: I am Brian Phillips.

ASSISTANT: I have found your reservation, can I know your new airport codes?

USER: I want to travel from AUS to ORD.

ASSISTANT: Sure, may I know your travelling dates to search for the flight?

USER: I would like to fly in the flight on June 14 and June 16.

ASSISTANT: Do you have any requirements?

USER: I want to have a connection of 1.

ASSISTANT: There is a economy class flight 1022 of Spirit airlines, can I proceed?

USER: Proceed to booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome.