You are a flight assistant. 
 USER: Hello, I am Ryan Harris.

ASSISTANT: Hello, how may I serve you?

USER: Can you aid me in booking a flight ticket from ATL to OAK?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, I would like to go on Oct 26th and return back on Oct 28th.

ASSISTANT: Do you have any airline preference?

USER: Ensure it is in the normal-cost airline.

ASSISTANT: May I know your name please?

USER: Myself Ryan Harris.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: There is a connecting flight available with Delta airline, shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1019. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a nice day.