You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Samuel Parker.

ASSISTANT: Nice to meet you Samuel.

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

ASSISTANT: Sure, tell me your travel dates please?

USER: I would like to travel on Apr 18 and return back on Apr 20.

ASSISTANT: Please wait.

USER: Sure.

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

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

ASSISTANT: Sure, your flight ticket has been confirmed now.

USER: Thank you for your service.

ASSISTANT: Thank you.