You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Myself Robert Scott. Is there any flight available to Dallas from Washington on 05/08, can you please check,  because I have to attend a Business meeting there?

ASSISTANT: Sure. I will help you with that.

USER: Thank you.

ASSISTANT: Can you share your location codes?

USER: I want to departure from DC-IAD because it is near to my location and destination airport code is TX-DFW.

ASSISTANT: When you will be return?

USER: Yes, please book my return ticket to DC-IAD on 05/10.

ASSISTANT: I have found a flight travelling towards your destination.

USER: Ok.

ASSISTANT: Shall I Proceed?

USER: Please book this flight ticket.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Welcome.