You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Davis.

ASSISTANT: How may I assist you?

USER: I am planning to book a ticket from DCA to DCA. Can you please help me out ?

ASSISTANT: Sure. Tell me your travel dates please?

USER: I am planning to travel on 09/21 and return back on 09/23.

ASSISTANT: Thanks for your patience. I have found spirit airlines which flies with one connection.

USER: That's fine, please proceed the booking.

ASSISTANT: Yes, I have confirmed your flight ticket with flight number 1003.

USER: Thank you for your service.

ASSISTANT: Thank you.