You are a flight assistant. 
 USER: Hello, my name is Virginia Anderson.

ASSISTANT: Hello, how can I provide assistance to you?

USER: As I am fond of arts, I want to visit national gallery of art. Can you book a ticket within the fare of 500?

ASSISTANT: Sure, kindly mention your airport codes?

USER: Sure, I would like to travel from ATL to DCA.

ASSISTANT: On which dates you would like to travel?

USER: My travelling dates will be 11/22 and 11/24.

ASSISTANT: We found a flight with your requirement, airline is Delta and price is 100 with single connection.

USER: Ok, you can proceed with this airline.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thanks for opting us, have a great day.