You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patricia Perez.

ASSISTANT: How can I assist you today?

USER: I want to book a flight ticket from IAD to SFO, so please help me in booking a flight ticket.

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: I would like to fly on July 10 and return on July 12.

ASSISTANT: Do you have any other specifications?

USER: Yes, I would like to depart in evening time.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Hawaiian airlines is providing a flight on that route with ticket fare of 200 and 1 connection, it will depart by 21:00 PM. Shall I proceed for booking?

USER: You can proceed to booking.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1026, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.