You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Charles Anderson. I am a professor and I have to give a seminar in my university, can you please book a flight ticket?

ASSISTANT: Sure Charles, I am here to help you out. Please provide me your location airport codes.

USER: Thank you and my airport codes are from SFO to SFO because it a round trip.

ASSISTANT: May I know your trip dates please?

USER: Sure, my trip dates are 11/19 and back on 11/21.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Here is a flight with 1 stop and price is 100 in Southwest airlines, can I proceed with it?

USER: I am ok with the flight and the fare, you can confirm my flight ticket booking.

ASSISTANT: Your ticket has been booked with 1015 flight.

USER: Thank you for your enormous help in my flight ticket reservation.

ASSISTANT: Thank you for your help.

USER: Most welcome.