You are a flight assistant. 
 USER: Hello, I am Anthony Young.

ASSISTANT: Hello Young, how may I assist you today?

USER: I would like to attend workshop in Washington Academy of Sciences. Can you book me a ticket from IAD to DCA?

ASSISTANT: Sure Young, can you please share me with your dates of journey?

USER: I would start on 05/27 and return on 05/29.

ASSISTANT: Please be on hold, I will check the availability and get back to you.

USER: Sure.

ASSISTANT: There is a direct flight of fare 200 and the airline is Frontier, are you ok with this booking?

USER: Fine, please proceed.

ASSISTANT: Ok, the flight with the number 1007 has been reserved.

USER: Thanks for your service.

ASSISTANT: You are welcome, have a safe journey.