You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Owing to an emergency, I have to change my previous flight ticket booking. Can you please help me in that changing?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for accepting my request.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: May I know your name please?

USER: My name is Ruth Garcia.

ASSISTANT: We found a reservation for you, can you share your travel dates?

USER: Sure, my travel dates are June 28th and June 30th.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from AUS to BOS locations.

ASSISTANT: Do you need a stopover?

USER: Yes, I need a single stop over.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I would like to departure in morning time and return back in the evening time.

ASSISTANT: Please wait a minute. Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, I can ask my friend to help me to reach my location. Thank you for your information.

ASSISTANT: Thank you for choosing us.