You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dorothy Green here.

ASSISTANT: How can I help you today?

USER: Due to inconvenience of my work, I want to change my reservation. Can you please help me for that?

ASSISTANT: Sure, I will help you with that.

USER: Thanks for that.

ASSISTANT: Please hold on a moment, I will check your reservation status.

USER: Ok, I will wait.

ASSISTANT: I have found your previous reservation. Can you please mention your travel dates for booking flight ticket?

USER: My travelling dates are from 08/20 to 08/22.

ASSISTANT: May I know your preferable airport code names?

USER: My airport codes are from AUS to MCO.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok, take your time.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 300 is provided by Delta airlines. Shall I proceed with this?

USER: Please proceed for booking the flight ticket.

ASSISTANT: I have confirmed your flight ticket, flight number is 1010.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us, have a good day.