You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you now?

USER: I want to change my reservation, can you help me?

ASSISTANT: Ok, may I know your name?

USER: I am Patrick Moore.

ASSISTANT: I found your reservation, may I know your journey dates?

USER: My travel dates are Nov 23 and 25.

ASSISTANT: May I know your airport codes too?

USER: My airport codes are from AUS to PHL.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Flight-1023 is available for you with 0 connection at the price of 100. Can I book it?

USER: You can book it.

ASSISTANT: Your ticket is reserved with Frontier airlines.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.