You are a flight assistant. 
 USER: Hello. I am Robert Thomas.

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

USER:  I want to go San Francisco in 4th month for my upcoming film shooting purpose, can you please book a flight ticket from Washington?

ASSISTANT: Sure, may I know planned travel dates please?

USER: Ok, my planned dates are 04/23 and 04/25.

ASSISTANT: Can you please share your source and destination airport codes?

USER: I am planning to start my journey from IAD airport code and my destination airport code is SFO.

ASSISTANT: Please wait for a moment.

USER: Ok, sure.

ASSISTANT: There is a flight available on your requested dates from Hawaiian airlines with 1 connecting flight.Shall I confirm your booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked with flight 1016.

USER: Ok, thank you for your help.

ASSISTANT: You are most welcome.