You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: My name is Ashley Campbell. I want to do some changes in my existing reservation. Can you help me for that?

ASSISTANT: Sure, I have found your reservation.Can you please tell me your trip dates?

USER: My travelling dates are Oct 05 and Oct 07.

ASSISTANT: Ok, may I know your location airport codes?

USER: My travelling airport codes are from AUS to IAD.

ASSISTANT: The economy class with flight number 1001 of Southwest airline is available having connection as 1, is it ok for you?

USER: Ok, please go head.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a great day.