You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I be your helping hand today?

USER: My friend birthday party place has been changed to Orlando, Can you please change my existing reservation?

ASSISTANT: Sure, I can help you in changing. May I know your name, to check your reservation status?

USER: Sure, I am Pamela Lopez from Houston.

ASSISTANT:  Pamela Lopez, we found a reservation with your name. Can you provide your new airport locations?

USER: Sure, my source is Washington, DC - IAD and destination is Orlando, FL - MCO.

ASSISTANT: Help me with your departure and arrival dates?

USER: My travelling dates are on 01/08 and 01/10.

ASSISTANT: Ok, Please wait.

USER: Sure.

ASSISTANT: AA airline of flight 1000, having one connection available on your travel dates.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been reserved with fare 200.

USER: Thank you.

ASSISTANT: Thanks for approaching us, have a safe journey!.