You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I would like to change my reservation due to some health issues, can you please help me out with that?

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: Thank you. Myself Jessica Allen.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation on your name, can you please share your planned dates?

USER: Sure, my travel dates are from Dec 02 to Dec 04.

ASSISTANT: Ok, let me know your airport codes.

USER: My airport codes are ATL and LGA.

ASSISTANT: Is there any other concerns?

USER: I would prefer connecting flight.

ASSISTANT: We found a connecting flight with a fare of 200 in 1008 Delta Airlines, shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Ok, your reservation has been changed successfully.

USER: Thank you for changing my reservation.

ASSISTANT: Thank you for choosing us.