You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am planning to visit Alcatraz Island which is in San Francisco. Can you please assist me to book a flight ticket from ORD?

ASSISTANT: Sure, may I know your destination airport code please?

USER: Sure, my destination airport code is SFO.

ASSISTANT: May I know your trip dates please?

USER: My trip dates are 09/18 and 09/20.

ASSISTANT: May I know your name please?

USER: Sure, I am Shirley Parker.

ASSISTANT: There is a flight for you in Spirit airlines with price 100. Shall I proceed?

USER: That satisfies all my requirements, please proceed with my booking.

ASSISTANT: Ok, your ticket is confirmed with flight number 1028.

USER: Thank you for booking my flight ticket with Spirit airline.

ASSISTANT: Thank you for choosing us.