You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Amy Hill.

ASSISTANT: How can I assist you at this moment?

USER: Can you please book a flight ticket for round trip with my friends?

ASSISTANT: Sure, I will help you with this. Can you please provide your nearest airport codes of journey?

USER: My journey point is Washington, DCA.

ASSISTANT: May I know your preferable journey dates please?

USER: My journey dates are, depart on 10/16 and arrival on 10/18.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Spirit airlines is providing service on this route with direct flight, are you ok with this airlines?

USER: Ok, proceed with the booking.

ASSISTANT: Amy Hill, your ticket is booked in flight number 1009.

USER: Thank you for your help.

ASSISTANT: Thank you and have a safe journey.