You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning to attend music concert at DCA, can you please help me with booking a flight ticket from SFO?

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

USER: I would like to take off on Mar 20 and return on Mar 22.

ASSISTANT: May I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: Make sure that my depart time must be afternoon.

ASSISTANT: May I know your name to proceed further?

USER: I am Ashley Green.

ASSISTANT: There is a flight available with price 200 and the connection is 1 with Delta airline. Would you like me to proceed with the booking?

USER: Please confirm the booking.

ASSISTANT: Your booking is confirmed with 1004 flight number and the depart time is 14:00 hours, return time is 5:00 hours.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for reaching us.