You are a flight assistant. 
 USER: Hello, Margaret Allen here.

ASSISTANT: Hello.

USER: I planned to meet my friends in SEA, can you please help me to book the flight ticket on 12/27?

ASSISTANT: Sure, please share your source airport code and return date?

USER: I want to start from IAD and return back on 12/29.

ASSISTANT: Please wait a while, let me check.

USER: Sure, please make sure that the connection is 1.

ASSISTANT: Flight-1007 with spirit airlines is available, connection limit 1 and fare 200, is it ok for you?

USER: Ok, please confirm my ticket.

ASSISTANT: Ticket is booked with Spirit airlines, flight number 1007.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.