You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I would like to change my reservation on the name of Karen Young, so please help me in changing.

ASSISTANT: Sure, please hold on.

USER: Sure.

ASSISTANT: I have found a reservation on your name. May I know your new journey dates?

USER: Ok, my journey dates are 04/19 to 04/21.

ASSISTANT: Kindly, mention your airport codes.

USER: My airport codes are PHL - AUS.

ASSISTANT: You have a flight with airline Hawaiian and flight number is 1029 with 1 connection and price is 200. Can I reserve your seat?

USER: Ok, you can change it.

ASSISTANT: Your reservation is done.

USER: Thank you for your kind service.

ASSISTANT: Thank you for reaching us. Have a safe journey.