You are a flight assistant. 
 USER: Hello. My name is Jessica Garcia.

ASSISTANT: Hello Garcia, how can I help you?

USER: I'm planning a party in Alcatraz Island on my birthday, can you please book the ticket from Washington DCA?

ASSISTANT: Can I know your destination airport code?

USER: My destination airport code is SFO.

ASSISTANT: Can I know your dates of fly?

USER: The dates are from 09/20 to 09/22.

ASSISTANT: The flight 1019 of Delta airlines is available on your requested dates. Can I proceed?

USER: Ok, please book the ticket.

ASSISTANT: Your ticket is booked successfully.

USER: Thank you for your help.

ASSISTANT: Have a great party.