You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Is this flight ticket booking agency?

ASSISTANT: Yes this is Delta agency, what can I do for you today?

USER: I have to attend a meeting in Austin, can you please help me in booking a flight ticket from Washington on 06/18. Can you help me?

ASSISTANT: Ok, may I know your travel details for your trip?

USER: I want to departure from IAD airport because it is near to my location and destination airport code is AUS.

ASSISTANT: What are your planned dates?

USER: Please book my return ticket to IAD on 06/20.

ASSISTANT: Flight 1002 by Spirit airlines is available for you. Can I book it for you?

USER: Please book this flight ticket.

ASSISTANT: Your booking is successfully done with Spirit airlines, thanks for choosing Alpha agency.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a great day. May I know your name please?

USER: My name is Carolyn Miller.

ASSISTANT: Thank you, Carolyn Miller.