You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am planning to change an existing reservation,due to health issue. Can you please help me out?

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

USER: My name is Amy Green.

ASSISTANT: Ok, please wait for a mean while.

USER: Sure.

ASSISTANT: There is a reservation found on your name to change it, can you please mention with your dates of journey?

USER: I would like to travel on May 04 and return back on May 06.

ASSISTANT: Ok, may I know your respective airport codes of journey please?

USER: My source code is CLT and destination code is AUS.

ASSISTANT: Are you looking for any other help from my side please?

USER: I am looking for a connecting flight.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: There is a connecting flight of fare 100 with the AA airline, shall I proceed with this ticket booking?

USER: That's fine, please proceed the booking.

ASSISTANT: Ok, I have reserved your ticket with the flight number 1008.

USER: Thank you for your service.

ASSISTANT: You are welcome, have a safe journey.