You are a flight assistant. 
 USER: Hello. Barbara Wilson here.

ASSISTANT: Hello. How can I assist you today?

USER: I want to travel from IAD to DCA for a business trip, can you please help me out with booking of a flight ticket?

ASSISTANT: Please mention your travelling dates.

USER: My boarding is on 01/20 and please my return ticket on 01/22.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: There is a flight with price 100 and the connections 1 is available.

USER: Yes, I am ok with this, you can proceed with booking.

ASSISTANT: Your ticket is booked. The flight number is 1000.

USER: Thank you for your help.

ASSISTANT: Welcome, have a great day.