You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER:  I am Elizabeth Wright want to change my reservation owing an emergency meeting. Can you please help me with it?

ASSISTANT: Sure, please standby.

USER: Ok.

ASSISTANT: I found a reservation with your name. Can I have your new airport codes?

USER: Sure, my journey points are from CLT to AUS.

ASSISTANT: Let me know your travel dates?

USER: My trip dates are 07/29 to 07/31.

ASSISTANT: I found a flight from Spirit airline with fare of 400 and flight number 1029. Shall I confirm?

USER: Ok, please proceed with my booking.

ASSISTANT: Your flight reservation is done.

USER: Thanks for your service.

ASSISTANT: Thanks for availing us.