You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Myself Scott Wilson, I have a client meeting at Francisco this week day. Can you please help me in reserving the ticket from DCA to SFO?

ASSISTANT: Sure, can you please share me with your dates of travel?

USER: I am willing to leave on Sep 19 and again I will retrieve on Sep 21.

ASSISTANT: Please wait for a moment to check for the availability.

USER: Sure, I will wait for your kind response.

ASSISTANT: I found a flight with the connecting flight of fare 200 and the airline is Delta, are you ok with this booking?

USER: Yes, I am very happy to travel in this flight. Please go ahead and reserve the ticket.

ASSISTANT: Ok, your booking is done with the flight number 1004.

USER: Thank you very much for reserving the ticket.

ASSISTANT: You are welcome, have a happy journey.

USER: You are welcome.