You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Donald Wilson. I want to do some changes in my existing reservation. Can you help me for that?

ASSISTANT: Sure, I am here to help you to change your reservation.

USER: Thank you.

ASSISTANT: Happy to say this, I found your reservation. can you please tell me your new airport codes?

USER: My travelling codes are from AUS to PHL.

ASSISTANT: Please share your travel dates too.

USER: My travelling dates are from 02/29 till 03/02.

ASSISTANT: Here, I found a flight for you with 1 connection and fare is 300. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done with flight 1009 and airline is Spirit.

USER: Thank you for booking.

ASSISTANT: Welcome, have a nice day.