You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Alexander Taylor want to go for shopping at Washington DC - IAD, can you book a ticket from DC - DCA?

ASSISTANT: Sure, please provide your travelling dates that you want to travel.

USER: Yes, my travelling dates will be 10/04 and 10/06.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. Based on your details, there is a flight with price 100 and the connections 1 is available.

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket is booked. The flight number is 1000 and the airline is Delta.

USER: Thank you.

ASSISTANT: It's my pleasure, have a great day.