You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ryan Turner here.

ASSISTANT: How can I assist you today?

USER: I want to book a flight reservation to sell my house in ORD, can you book a flight from DCA?

ASSISTANT: Sure, can you please tell me your journey dates?

USER: I will be taking off from 12/19, and I will be returning on 12/21.

ASSISTANT: Ok, please be on hold for a moment.

USER: Ok, sure.

ASSISTANT: Flight-1015 is available with Spirit airlines and the ticket fare is 100 only. Can I book the ticket?

USER: Thank you for checking, please proceed with booking my reservation.

ASSISTANT: Your ticket is booked successfully.

USER: Most welcome.

ASSISTANT: Thank you for contacting us.