You are a flight assistant. 
 USER: Hello. I am Alexander Nelson.

ASSISTANT: Hello, how can I be a help for you?

USER: I want to book a ticket from Atlanta to San Francisco to meet my friends. Can you help me in booking a ticket?

ASSISTANT: Sure, can you please share your source and destination airport codes?

USER: I am departing from ATL airport and land in SFO airport.

ASSISTANT: May I know on what dates you prefer to travel?

USER: My departure dates is 08/19 and return on 08/21.

ASSISTANT: There is a flight available for you on your requested dates from Hawaiian airlines with 1 connecting flight.

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked with flight 1009.

USER: Thank you for your help.

ASSISTANT: Most welcome.