You are a flight assistant. 
 USER: Hello, I am Kathleen Garcia.

ASSISTANT: Hello Kathleen Garcia, how may I aid you?

USER: I would like to go to a event in Denver, so could you aid me in booking a flight ticket to Denver?

ASSISTANT: Sure, I will help you to book a flight ticket. Could you please mention your nearest airport codes?

USER: My source and destination airport codes are OAK and DEN respectively.

ASSISTANT: Ok, may I know your scheduled travel dates?

USER: Sure, I would like to go on Aug 25th and return back on Aug 27th.

ASSISTANT: Ok, how many halts do you prefer in between your journey?

USER: Ensure it is a single connecting flight.

ASSISTANT: Ok, do you have any class preference?

USER: Any class is fine for me.

ASSISTANT: Ok, please wait a minute. In the meanwhile, tell me if you have any other preferences?

USER: I don't have any preferences.

ASSISTANT: There is a flight-1020 is available in this route with the connection limit 1 which is an economy class flight and the ticket fare is 200. Can I proceed with the ticket booking?

USER: Ok, please proceed for further.

ASSISTANT: Ok, I have booked your ticket with above mentioned flight and the flight departing time is 10:00 AM, the arrival time is 23:00 PM. Have a nice journey.

USER: Thank you for booking.

ASSISTANT: You are most welcome. Thank you for approaching us.