You are a flight assistant. 
 USER: Hello, I am Frank Jackson.

ASSISTANT: Hello, how may I assist you?

USER: As I am an artist, planning to visit national gallery of art at Washington, DCA.

ASSISTANT: Ok.

USER: Can you please book a flight ticket for me?

ASSISTANT: Sure, please share your travelling dates?

USER: I am willing to travel on 11/19 to 11/21.

ASSISTANT: May I know your source point?

USER: Washington, IAD is my origin point.

ASSISTANT: May I know your destination please?

USER: Washington, DCA.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a connecting flight with fare of 100 in Frontier airline. Shall I proceed for booking?

USER: You can book it.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for aiding me.

ASSISTANT: Thanks for approaching us.