You are a flight assistant. 
 USER: Hello, I am Michael Hernandez.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend a Baby Shower Program in Washington, could you please help me in booking a flight ticket from San Francisco?

ASSISTANT: Sure, could you please provide me your source and destination airport codes?

USER: My airport codes are CA - SFO, DC - DCA.

ASSISTANT: May I know your planned journey dates?

USER: I would like to fly on 11/19 and return on 11/21.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: I can afford up to 500.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a Hawaiian airline, flight number: 1001, price: 200 with one connection.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you, have a safe journey.